The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A291556 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A291556

Square array A(n,k), n>=0, k>=0, read by antidiagonals: A(n,k) = (n!)^k * Sum_{i=1..n} 1/i^k.
(history; published version)

#26 by Susanna Cuyler at Sat May 11 10:10:57 EDT 2019

STATUS

proposed

approved

#25 by Jean-François Alcover at Sat May 11 07:31:29 EDT 2019

STATUS

editing

proposed

#24 by Jean-François Alcover at Sat May 11 07:31:24 EDT 2019

MATHEMATICA

A[0, _] = 0; A[1, _] = 1; A[n_, k_] := A[n, k] = ((n-1)^k + n^k) A[n-1, k] - (n-1)^(2k) A[n-2, k];

Table[A[n-k, k], {n, 0, 10}, {k, n, 0, -1}] // Flatten (* Jean-François Alcover, May 11 2019 *)

STATUS

approved

editing

#23 by Vaclav Kotesovec at Sun Aug 27 03:28:45 EDT 2017

STATUS

reviewed

approved

#22 by Michel Marcus at Sun Aug 27 03:08:33 EDT 2017

STATUS

proposed

reviewed

#21 by Seiichi Manyama at Sat Aug 26 22:40:12 EDT 2017

STATUS

editing

proposed

#20 by Seiichi Manyama at Sat Aug 26 22:39:16 EDT 2017

LINKS

Seiichi Manyama, <a href="/A291556/b291556.txt">Table of n, a(n) for Antidiagonals n = 0..182959, flattened</a>

#19 by Seiichi Manyama at Sat Aug 26 22:37:52 EDT 2017

LINKS

Seiichi Manyama, <a href="/A291556/b291556.txt">Table of n, a(n) for n = 0..1829</a>

STATUS

approved

editing

#18 by Bruno Berselli at Sat Aug 26 16:15:31 EDT 2017

STATUS

proposed

approved

#17 by Alois P. Heinz at Sat Aug 26 15:18:07 EDT 2017

STATUS

editing

proposed