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A032144
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Number of ways to partition n labeled elements into pie slices of different sizes.
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1
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1, 1, 1, 4, 5, 16, 142, 274, 989, 4288, 85946, 198694, 956474, 4175406, 27422046, 987716734, 2795429469, 15572226016, 79325378242, 505995253870, 4052677330190, 262080271991458, 855619281477786, 5627859038743330
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OFFSET
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0,4
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LINKS
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FORMULA
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"CGJ" (necklace, element, labeled) transform of 1, 1, 1, 1...
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PROG
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(PARI) seq(n)=[subst(serlaplace(p/y), y, 1) | p <- Vec(y-1+serlaplace(prod(k=1, n, 1 + x^k*y/k! + O(x*x^n))))] \\ Andrew Howroyd, Sep 11 2018
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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