The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A004096

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

A004096

Catalan numbers written backwards.
(history; published version)

#22 by Charles R Greathouse IV at Thu Sep 08 08:44:32 EDT 2022

PROG

(MAGMAMagma) [Seqint(Reverse(Intseq(Catalan(n)))): n in [0..40]]; // Vincenzo Librandi, Jan 21 2016

Discussion

Thu Sep 08

08:44

OEIS Server: https://oeis.org/edit/global/2944

#21 by Joerg Arndt at Thu Jan 21 02:54:56 EST 2016

STATUS

reviewed

approved

#20 by Michel Marcus at Thu Jan 21 01:47:57 EST 2016

STATUS

proposed

reviewed

#19 by Vincenzo Librandi at Thu Jan 21 00:51:06 EST 2016

STATUS

editing

proposed

#18 by Vincenzo Librandi at Thu Jan 21 00:50:58 EST 2016

MATHEMATICA

FromDigits[Reverse[IntegerDigits[#]]]&/@CatalanNumber[Range[0, 40]] (* Vincenzo Librandi, Jan 21 2016 *)

PROG

(MAGMA) [Seqint(Reverse(Intseq(Catalan(n)))): n in [0..40]]; // Vincenzo Librandi, Jan 21 2016

STATUS

approved

editing

#17 by Alois P. Heinz at Thu Apr 09 10:48:39 EDT 2015

STATUS

editing

approved

#16 by Alois P. Heinz at Thu Apr 09 10:48:34 EDT 2015

EXTENSIONS

More terms from __Eric M. Schmidt_, Apr 04 2014

STATUS

approved

editing

#15 by Alois P. Heinz at Thu Apr 09 10:48:14 EDT 2015

STATUS

editing

approved

#14 by Alois P. Heinz at Thu Apr 09 10:48:10 EDT 2015

LINKS

Alois P. Heinz, <a href="/A004096/b004096.txt">Table of n, a(n) for n = 0..1000</a>

MAPLE

a:= n-> (s-> parse(cat(s[-i]$i=1..length(s))))(

""||(binomial(2*n, n)/(n+1))):

seq(a(n), n=0..50); # Alois P. Heinz, Apr 09 2015

STATUS

approved

editing

#13 by Bruno Berselli at Sat Apr 05 01:35:08 EDT 2014

STATUS

editing

approved