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 A007922 Smallest k such that k!! is a multiple of n. 1
 1, 2, 3, 4, 5, 6, 7, 4, 9, 10, 11, 6, 13, 14, 5, 6, 17, 12, 19, 10, 7, 22, 23, 6, 15, 26, 9, 14, 29, 10, 31, 8, 11, 34, 7, 12, 37, 38, 13, 10, 41, 14, 43, 22, 9, 46, 47, 6, 21, 20, 17, 26, 53, 18, 11, 14, 19, 58, 59, 10, 61, 62, 9, 8, 13, 22, 67, 34, 23, 14, 71, 12, 73, 74, 15, 38, 11, 26 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 F. Smarandache, Only Problems, Not Solutions!. MATHEMATICA df[n_]:=Module[{k=1}, While[!Divisible[k!!, n], k++]; k]; Array[df, 80] (* Harvey P. Dale, Jun 04 2013 *) CROSSREFS Sequence in context: A272573 A319999 A083501 * A007948 A038389 A058223 Adjacent sequences:  A007919 A007920 A007921 * A007923 A007924 A007925 KEYWORD nonn AUTHOR R. Muller STATUS approved

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Last modified November 19 00:12 EST 2018. Contains 317332 sequences. (Running on oeis4.)