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A068006
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Number of partitions of n into distinct partition numbers.
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1
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1, 2, 5, 9, 17, 28, 47, 72, 112, 164, 242, 342, 486, 668, 920, 1237, 1663, 2193, 2891, 3750, 4861, 6218, 7944, 10037, 12664, 15827, 19749, 24444, 30204, 37057, 45391, 55250, 67141, 81140, 97895, 117529, 140873, 168105, 200285, 237672, 281604
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| G.f.: Product_{n>=1} (1/(1-x^A000009(n))).
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MATHEMATICA
| CoefficientList[ Series[1/Product[1 - x^PartitionsQ[i], {i, 1, 50}], {x, 0, 50}], x]
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CROSSREFS
| Cf. A000009, A007279.
Sequence in context: A165271 A139672 A093694 * A000097 A081996 A034329
Adjacent sequences: A068003 A068004 A068005 * A068007 A068008 A068009
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KEYWORD
| nonn
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 11 2002
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