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A115514
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Triangle read by rows: row n lists first n positive members of A004526 (integers repeated) in decreasing order.
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2
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1, 1, 1, 2, 1, 1, 2, 2, 1, 1, 3, 2, 2, 1, 1, 3, 3, 2, 2, 1, 1, 4, 3, 3, 2, 2, 1, 1, 4, 4, 3, 3, 2, 2, 1, 1, 5, 4, 4, 3, 3, 2, 2, 1, 1, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,4
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COMMENTS
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Row sums = A002620 starting (1, 2, 4, 6, 9, 12, 16, 20,...). - Gary W. Adamson, Oct 25 2007
Equals A000012 * A128174 - Gary W. Adamson, Oct 25 2007
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LINKS
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Table of n, a(n) for n=1..105.
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EXAMPLE
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Triangle begins:
{1},
{1, 1},
{2, 1, 1},
{2, 2, 1, 1},
{3, 2, 2, 1, 1},
{3, 3, 2, 2, 1, 1},
{4, 3, 3, 2, 2, 1, 1}
...
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CROSSREFS
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Cf. A000073, A004526, A128174, A002620.
Sequence in context: A174545 A102523 A083415 * A122632 A176809 A187451
Adjacent sequences: A115511 A115512 A115513 * A115515 A115516 A115517
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KEYWORD
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nonn,tabl
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AUTHOR
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Roger Bagula, Mar 07 2006
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EXTENSIONS
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Edited by N. J. A. Sloane, Mar 23 2008
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STATUS
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approved
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