The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A001517 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A001517

Bessel polynomials y_n(x) (see A001498) evaluated at 2.
(history; published version)

#111 by Alois P. Heinz at Fri Oct 27 19:35:43 EDT 2023

STATUS

proposed

approved

#110 by Jon E. Schoenfield at Fri Oct 27 19:17:18 EDT 2023

STATUS

editing

proposed

#109 by Jon E. Schoenfield at Fri Oct 27 19:17:14 EDT 2023

LINKS

T. D. Noe and Robert Israel, <a href="/A001517/b001517.txt">Table of n, a(n) for n = 0..334</a> (first 101 terms from T. D. Noe)

STATUS

approved

editing

#108 by Jon E. Schoenfield at Mon Sep 04 23:52:07 EDT 2023

STATUS

editing

approved

#107 by Jon E. Schoenfield at Mon Sep 04 23:51:52 EDT 2023

LINKS

P. Bala, <a href="/A001517/a001517.pdf">A note on the Catalan transform of a sequence</a>.

INRIA Algorithms Project, <a href="http://ecs.inria.fr/services/structure?nbr=131">Encyclopedia of Combinatorial Structures 131</a>.

J. Riordan, <a href="/A001519/a001519_1.pdf">Letter to N. J. A. Sloane, Jul. 1968</a>.

J. Riordan, <a href="/A001850/a001850_2.pdf">Letter, Jul 06 1978</a>.

N. J. A. Sloane, <a href="/A001514/a001514.pdf">Letter to J. Riordan, Nov. 1970</a>.

STATUS

approved

editing

#106 by Jon E. Schoenfield at Thu Aug 04 01:04:52 EDT 2022

STATUS

editing

approved

#105 by Jon E. Schoenfield at Thu Aug 04 01:04:50 EDT 2022

FORMULA

G.f.: 1/Q(0), where Q(k) = 1 - x - 2*x*(k+1)/Q(k+1); (continued fraction). - Sergei N. Gladkovskii, May 17 2013

STATUS

approved

editing

#104 by Georg Fischer at Fri Jul 29 03:21:57 EDT 2022

STATUS

editing

approved

#103 by Georg Fischer at Fri Jul 29 03:21:44 EDT 2022

FORMULA

D-finite with recurrece recurrence a(n) = (4*n-2)*a(n-1) + a(n-2), n >= 2.

STATUS

approved

editing

Discussion

Fri Jul 29

03:21

Georg Fischer: Typo.

#102 by Peter Luschny at Tue May 10 14:26:32 EDT 2022

STATUS

editing

approved