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A151714 When A151552 is written as a triangle the rows converge to this. 1
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)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..92.

FORMULA

a(n)=A151553(n-1), n>0. [From R. J. Mathar, Jul 07 2009]

EXAMPLE

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)

MAPLE

G := 1 + x*(1+x)*mul( 1 + x^(2^n-1) + x^(2^n), n=1..20);

CROSSREFS

Cf. A151552m A151553, A000079.

Sequence in context: A244798 A023508 A151553 * A039644 A163107 A178065

Adjacent sequences:  A151711 A151712 A151713 * A151715 A151716 A151717

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 08 2009

STATUS

approved

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Last modified October 24 13:22 EDT 2014. Contains 248516 sequences.