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Search: id:A103213
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A103213 n! * Sum[k=1..n, C(n,k)/k ]. +0
2
1, 5, 29, 206, 1774, 18204, 218868, 3036144, 47928816, 850514400, 16783812000, 364865040000, 8666747625600, 223351748524800, 6206847295622400, 185007996436838400, 5887506932836300800, 199216094254423142400 (list; graph; listen)
OFFSET

1,2

FORMULA

E.g.f.: ln((1-2*x)/(1-x))/(x-1). a(n) = n! * Sum[k=1..n, (2^k-1)/k ]. - Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 29 2005

CROSSREFS

Sequence in context: A108453 A004213 A105277 this_sequence A057588 A030522 A091124

Adjacent sequences: A103210 A103211 A103212 this_sequence A103214 A103215 A103216

KEYWORD

nonn

AUTHOR

Ralf Stephan, Jan 28 2005

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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