The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A091699

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A091699

Row sums of triangle A091698.
(history; published version)

#22 by Wesley Ivan Hurt at Fri Mar 17 14:41:37 EDT 2023

STATUS

editing

approved

#21 by Wesley Ivan Hurt at Fri Mar 17 14:41:25 EDT 2023

CROSSREFS

Cf. A091698.

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approved

editing

#20 by Alois P. Heinz at Wed Feb 28 21:37:13 EST 2018

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proposed

approved

#19 by Andrew Howroyd at Wed Feb 28 21:13:38 EST 2018

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editing

proposed

#18 by Andrew Howroyd at Wed Feb 28 21:08:04 EST 2018

LINKS

Vincenzo Librandi, <a href="/A091699/b091699.txt">Table of n, a(n) for n = 0..1000200</a>

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approved

editing

#17 by Susanna Cuyler at Tue Jan 16 21:14:42 EST 2018

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proposed

approved

#16 by Jon E. Schoenfield at Tue Jan 16 19:03:24 EST 2018

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editing

proposed

#15 by Jon E. Schoenfield at Tue Jan 16 19:03:21 EST 2018

COMMENTS

Hankel transform is (-1)^n. [From _- _Paul Barry_, Jun 17 2010]

FORMULA

Conjecture: 2*n*a(n) + (13*n-16)*a(n-1) + 4*(4*n-7)*a(n-2) + 5*(n-2)*a(n-3) = 0. - R. J. Mathar, Nov 24 2012

PROG

(PARI) a(n)=polcoeff(2/(3+3*x-sqrt(1+6*x+5*x^2+x*O(x^n))), n, x) (\\ _Paul D. Hanna)_

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approved

editing

#14 by Joerg Arndt at Thu Feb 13 02:49:20 EST 2014

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proposed

approved

#13 by Vincenzo Librandi at Thu Feb 13 02:48:26 EST 2014

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editing

proposed