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 A063944 Final nonzero digit of (n!)! (A000197). 2
 1, 1, 2, 2, 6, 6, 6, 4, 6, 8, 2, 8, 8, 6, 4, 4, 6, 6, 8, 2, 6, 4, 4, 8, 2, 2, 6, 2, 2, 6, 4, 6, 2, 2, 8, 4, 6, 8, 2, 2, 2, 2, 8, 6, 6, 6, 2, 2, 6, 8, 4, 2, 2, 2, 8, 8, 4, 4, 2, 6, 8, 6, 4, 6, 6, 4, 8, 2, 2, 4, 4, 2, 8, 2, 8, 2, 4, 2, 8, 8, 6, 8, 2, 8, 4, 4, 6, 8, 8, 6, 2, 4, 6, 2, 6, 4, 2, 6, 4, 6, 2, 6, 4, 2, 8, 2, 4, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS David W. Wilson, Table of n, a(n) for n = 0..1000 PROG (PARI) for(n=0, 22, m=n!!; while(Mod(m, 10) == 0, m=m/10); print(Mod(m, 10))) CROSSREFS Cf. A000197, A008904. Sequence in context: A167909 A185421 A219976 * A086447 A196872 A140219 Adjacent sequences:  A063941 A063942 A063943 * A063945 A063946 A063947 KEYWORD nonn,base,changed AUTHOR Jason Earls, Sep 01 2001 EXTENSIONS More terms from David W. Wilson, Sep 05 2001, who remarks that "I'll tell you, computing (107!)! took up some disk space!" STATUS approved

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Last modified December 18 11:13 EST 2017. Contains 296143 sequences.