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 A096314 a(n) = Sum_{1<=k<=n, gcd(n,k)=1} (-1)^(n-k)*Stirling1(n,k). 1
 1, 1, 5, 12, 119, 135, 5039, 20160, 240219, 1545075, 39916799, 88550154, 6227020799, 42798202447, 698726730520, 10461394944000, 355687428095999, 1375276302469251, 121645100408831999, 845066215769150100 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS MATHEMATICA f[n_] := Sum[ If[ GCD[n, k] == 1, (-1)^(n - k)StirlingS1[n, k], 0], {k, n}]; Table[ f[n], {n, 20}] (* Robert G. Wilson v, Aug 12 2004 *) CROSSREFS Cf. A008275. Sequence in context: A009427 A267271 A009754 * A332466 A323565 A195538 Adjacent sequences: A096311 A096312 A096313 * A096315 A096316 A096317 KEYWORD easy,nonn AUTHOR Vladeta Jovovic, Aug 01 2004 EXTENSIONS More terms from Robert G. Wilson v, Aug 12 2004 STATUS approved

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Last modified December 4 10:32 EST 2022. Contains 358556 sequences. (Running on oeis4.)