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 A217576 sum( d divides n, (d!)^(n/d) ). 0
 1, 3, 7, 29, 121, 765, 5041, 40913, 363097, 3643233, 39916801, 479535185, 6227020801, 87203692929, 1307676103777, 20924415922433, 355687428096001, 6402505760917569, 121645100408832001, 2432915176581403649, 51090942299733783937, 1124002321128529922049 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS FORMULA G.f.: Sum_{n>=1} n!*x^n / (1 - n!*x^n). - Paul D. Hanna, Jan 17 2013 PROG (PARI)  a(n)=sumdiv(n, d, (d!)^(n/d) ); CROSSREFS Cf. A062363 ( sum( d divides n, d!) ). Cf. A062796 ( sum( d divides n, d^d) ), A066108 ( sum( d divides n, n^d) ). Sequence in context: A337489 A088095 A333392 * A173280 A141477 A211371 Adjacent sequences:  A217573 A217574 A217575 * A217577 A217578 A217579 KEYWORD nonn AUTHOR Joerg Arndt, Oct 07 2012 STATUS approved

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Last modified May 13 19:36 EDT 2021. Contains 343868 sequences. (Running on oeis4.)