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A151714
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When A151552 is written as a triangle the rows converge to this.
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1
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1, 1, 2, 2, 2, 3, 4, 3, 2, 3, 4, 4, 5, 7, 7, 4, 2, 3, 4, 4, 5, 7, 7, 5, 5, 7, 8, 9, 12, 14, 11, 5, 2, 3, 4, 4, 5, 7, 7, 5, 5, 7, 8, 9, 12, 14, 11, 6, 5, 7, 8, 9, 12, 14, 12, 10, 12, 15, 17, 21, 26, 25, 16, 6, 2, 3, 4, 4, 5, 7, 7, 5, 5, 7, 8, 9, 12, 14, 11, 6, 5, 7, 8, 9, 12, 14, 12, 10, 12, 15, 17, 21, 26
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..92.
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FORMULA
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a(n)=A151553(n-1), n>0. [From R. J. Mathar, Jul 07 2009]
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EXAMPLE
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Contribution from Omar E. Pol, Jun 09 2009: (Start)
Triangle begings:
1;
1;
2,2;
2,3,4,3;
2,3,4,4,5,7,7,4;
2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,5;
2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,6,5,7,8,9,12,14,12,10,12,15,17,21,26,25,16,6;
2,3,4,4,5,7,7,5,5,7,8,9,12,14,11,6,5,7,8,9,12,14,12,10,12,15,17,21,26,...
(End)
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MAPLE
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G := 1 + x*(1+x)*mul( 1 + x^(2^n-1) + x^(2^n), n=1..20);
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CROSSREFS
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Cf. A151552m A151553, A000079.
Sequence in context: A052275 A023508 A151553 * A039644 A163107 A178065
Adjacent sequences: A151711 A151712 A151713 * A151715 A151716 A151717
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane, Jun 08 2009
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STATUS
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approved
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