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Search: id:A117117
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| A117117 |
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A sequence related to M-partitions. |
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+0
2
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| 1, 1, 2, 4, 6, 8, 13, 15, 21, 29, 37, 45, 62, 70, 89, 108, 132, 151, 191, 210, 256, 296, 350, 390, 476, 516, 610, 684, 795, 869, 1025, 1099, 1274, 1399, 1593, 1718, 1994, 2119, 2414, 2614, 2949, 3149, 3585, 3785, 4267, 4577, 5099, 5409, 6102, 6412, 7145, 7603, 8422
(list; graph; listen)
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OFFSET
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0,3
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REFERENCES
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O. J. Rodseth, Enumeration of M-partitions, Discrete Math., 306 (2006), 694-698. (See E(x).)
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MAPLE
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# To get about 80 terms, first define B and D2 as in A117115. E2:=add( x^(2^(j+1)-4)*subs(x=x^(3*2^(j-1)), D2)*mul(1/(1-x^(2^i)), i=0..j), j=1..8); series(E2, x, 81);
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CROSSREFS
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Cf. A000123, A100529, A117115.
Sequence in context: A136101 A086141 A067883 this_sequence A135109 A039846 A094092
Adjacent sequences: A117114 A117115 A117116 this_sequence A117118 A117119 A117120
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Apr 26 2006
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