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 A192561 a(n) = sum(stirling1(n+1,k+1)^2*k!,k=0..n). 0
 1, 2, 15, 235, 6150, 239596, 12934838, 921199238, 83488967768, 9367741437936, 1273270076895432, 205977064267447848, 39082297497546456816, 8591243344831665290592, 2165102057150152483834032, 619866690597157598321655216, 200017218987010519451515954560 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..16. MATHEMATICA Table[Sum[StirlingS1[n+1, k+1]^2k!, {k, 0, n}], {n, 0, 100}] PROG (Maxima) makelist(sum(stirling1(n+1, k+1)^2*k!, k, 0, n), n, 0, 24); CROSSREFS Sequence in context: A326095 A212370 A302358 * A356587 A227098 A180610 Adjacent sequences: A192558 A192559 A192560 * A192562 A192563 A192564 KEYWORD nonn AUTHOR Emanuele Munarini, Jul 04 2011 STATUS approved

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Last modified May 30 07:51 EDT 2023. Contains 363050 sequences. (Running on oeis4.)