The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A256679 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A256679

A signed triangle of V. I. Arnold for the Springer numbers (A001586).
(history; published version)

#31 by Peter Luschny at Sat Mar 07 12:08:48 EST 2020

STATUS

proposed

approved

#30 by F. Chapoton at Sat Mar 07 11:48:13 EST 2020

STATUS

editing

proposed

#29 by F. Chapoton at Sat Mar 07 11:48:06 EST 2020

PROG

L = [1]; print (L)

print (L)

STATUS

approved

editing

Discussion

Sat Mar 07

11:48

F. Chapoton: adapt sage code for py3

#28 by Bruno Berselli at Fri Jul 12 08:10:09 EDT 2019

STATUS

proposed

approved

#27 by Felix Fröhlich at Fri Jul 12 07:39:13 EDT 2019

STATUS

editing

proposed

#26 by Felix Fröhlich at Fri Jul 12 07:38:26 EDT 2019

EXAMPLE

1;

1, 0;

-2, -3, -3;

-8, -6, -3, 0;

40, 48, 54, 57, 57;

256, 216, 168, 114, 57, 0;

STATUS

proposed

editing

#25 by Jean-François Alcover at Fri Jul 12 07:18:30 EDT 2019

STATUS

editing

proposed

#24 by Jean-François Alcover at Fri Jul 12 07:18:26 EDT 2019

MATHEMATICA

T[n_, m_] := Sum[4^i EulerE[2i] Binomial[2k, 2i] Binomial[n-m, 2k-m], {k, Floor[m/2], n/2}, {i, 0, k}];

Table[T[n, m], {n, 0, 8}, {m, 0, n}] // Flatten (* Jean-François Alcover, Jul 12 2019 *)

STATUS

approved

editing

#23 by N. J. A. Sloane at Thu Apr 09 08:04:24 EDT 2015

STATUS

proposed

approved

#22 by Peter Luschny at Thu Apr 09 07:56:01 EDT 2015

STATUS

editing

proposed