The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A177788

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A177788

a(n) = binomial(n^2, n+1)/(n-1).
(history; published version)

#11 by Charles R Greathouse IV at Wed May 01 06:39:17 EDT 2024

STATUS

editing

approved

#10 by Charles R Greathouse IV at Wed May 01 06:39:12 EDT 2024

PROG

(PARI) a(n) = binomial(n^2, n+1)/(n-1) \\ Charles R Greathouse IV, May 01 2024

STATUS

approved

editing

#9 by OEIS Server at Wed May 01 06:38:35 EDT 2024

LINKS

G. C. Greubel, <a href="/A177788/b177788_1.txt">Table of n, a(n) for n = 2..335</a>

#8 by Charles R Greathouse IV at Wed May 01 06:38:35 EDT 2024

STATUS

reviewed

approved

Discussion

Wed May 01

06:38

OEIS Server: Installed first b-file as b177788.txt.

#7 by Joerg Arndt at Wed May 01 03:44:19 EDT 2024

STATUS

proposed

reviewed

#6 by G. C. Greubel at Mon Apr 29 02:52:25 EDT 2024

STATUS

editing

proposed

#5 by G. C. Greubel at Mon Apr 29 02:51:40 EDT 2024

LINKS

G. C. Greubel, <a href="/A177788/b177788_1.txt">Table of n, a(n) for n = 2..335</a>

#4 by G. C. Greubel at Sun Apr 28 23:54:42 EDT 2024

NAME

a(n) = binomial(n^2, n+1)/(n-1).

DATA

4, 63, 1456, 44275, 1669536, 75163011, 3934369216, 234799050915, 15736644960400, 1170354134607658, 95648578915114512, 8520904136405458044, 821828481957792579648, 85317719822978885714475, 9485883860726883646713600, 1124586875214241546178986915

FORMULA

a(n) = binomial(n^2,n+1)/(n-1) = n * A177234(n) = n^2 * A177784(n).

a(n) = n * A177234(n).

a(n) = n^2 * A177784(n).

MATHEMATICA

Table[Binomial[n^2, n+1]/(n-1), {n, 2, 40}] (* G. C. Greubel, Apr 28 2024 *)

PROG

(Magma) [Binomial(n^2, n+1)/(n-1): n in [2..30]]; // G. C. Greubel, Apr 28 2024

(SageMath) [binomial(n^2, n+1)/(n-1) for n in range(2, 31)] # G. C. Greubel, Apr 28 2024

CROSSREFS

Cf. A177234, A177784, A000108, A014062, A060545, A177234, A177456, A177784.

STATUS

approved

editing

#3 by Russ Cox at Fri Mar 30 18:35:53 EDT 2012

AUTHOR

_Michel Lagneau (mn.lagneau2(AT)orange.fr), _, May 13 2010

Discussion

Fri Mar 30

18:35

OEIS Server: https://oeis.org/edit/global/205

#2 by Russ Cox at Fri Mar 30 17:40:24 EDT 2012

EXTENSIONS

Removed redundant second Maple version - _R. J. Mathar (mathar(AT)strw.leidenuniv.nl), _, May 14 2010

Discussion

Fri Mar 30

17:40

OEIS Server: https://oeis.org/edit/global/190