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A242844
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Number of compositions of n with difference 4 between the number of odd parts and the number of even parts, both counted without multiplicity.
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2
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24, 60, 144, 330, 684, 1374, 2688, 5106, 9532, 17208, 30856, 55296, 97812, 175926, 316928, 581352, 1083674, 2064346, 4012614, 7957492, 16061208, 32880201, 68032764, 141844516, 297086796, 623794222, 1310685218, 2752470170, 5772036942, 12079693049, 25220161732
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OFFSET
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16,1
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COMMENTS
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First odd term is a(37) = 32880201.
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LINKS
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EXAMPLE
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a(16) = 24 = 4!: all permutations of {1,3,5,7}.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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