The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A332280 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A332280

Number of integer partitions of n with unimodal run-lengths.
(history; published version)

#18 by Michel Marcus at Mon May 10 03:57:08 EDT 2021

STATUS

reviewed

approved

#17 by Joerg Arndt at Mon May 10 02:28:59 EDT 2021

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proposed

reviewed

#16 by Michel Marcus at Mon May 10 02:17:32 EDT 2021

STATUS

editing

proposed

#15 by Michel Marcus at Mon May 10 02:17:28 EDT 2021

LINKS

MathWorld, Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/UnimodalSequence.html">Unimodal Sequence</a>

STATUS

proposed

editing

#14 by Jean-François Alcover at Mon May 10 02:13:21 EDT 2021

STATUS

editing

proposed

#13 by Jean-François Alcover at Mon May 10 02:13:10 EDT 2021

MATHEMATICA

(* Second program: *)

b[n_, i_, m_, t_] := b[n, i, m, t] = If[n == 0, 1, If[i < 1, 0, Sum[b[n - i*j, i - 1, j, t && j >= m], {j, 1, Min[If[t, Infinity, m], n/i]}] + b[n, i - 1, m, t]]];

a[n_] := b[n, n, 0, True];

a /@ Range[0, 65] (* Jean-François Alcover, May 10 2021, after Alois P. Heinz *)

STATUS

approved

editing

#12 by Alois P. Heinz at Thu Feb 20 22:28:10 EST 2020

STATUS

editing

approved

#11 by Alois P. Heinz at Thu Feb 20 22:28:08 EST 2020

LINKS

Alois P. Heinz, <a href="/A332280/b332280.txt">Table of n, a(n) for n = 0..1000</a>

STATUS

approved

editing

#10 by Alois P. Heinz at Thu Feb 20 22:27:48 EST 2020

STATUS

reviewed

approved

#9 by Alois P. Heinz at Thu Feb 20 21:56:50 EST 2020

STATUS

proposed

reviewed