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

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

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: A359481 A023508 A151553 * A039644 A281945 A163107

Adjacent sequences: A151711 A151712 A151713 * A151715 A151716 A151717

Keyword

nonn

Author

N. J. A. Sloane, Jun 08 2009

Status

approved