A117115 A sequence related to M-partitions.

1, 2, 3, 6, 7, 11, 14, 21, 24, 34, 37, 51, 58, 75, 82, 110, 117, 148, 161, 202, 215, 265, 278, 342, 365, 436, 459, 557, 580, 685, 722, 855, 892, 1046, 1083, 1268, 1325, 1523, 1580, 1839, 1896, 2168, 2251, 2573, 2656, 3017, 3100, 3525, 3644, 4092, 4211, 4766, 4885

Offset

0,2

Links

Table of n, a(n) for n=0..52.

O. J. Rodseth, Enumeration of M-partitions, Discrete Math., 306 (2006), 694-698. (See D(x).)

Maple

# To get about 80 terms: B:=mul( (1-x^(2^n))^(-1), n=0..7); D2:=add( x^(2^(j-1)-1)*subs(x=x^(3*2^(j-1)), B)*mul(1/(1-x^(2^i)), i=0..j), j=1..8); series(D2, x, 81);

Crossrefs

Cf. A000123, A100529, A117117.

Sequence in context: A294176 A008765 A018468 * A308733 A363046 A049196

Adjacent sequences: A117112 A117113 A117114 * A117116 A117117 A117118

Keyword

nonn

Author

N. J. A. Sloane, Apr 26 2006

Status

approved