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 A136755 a(n) = leading digit of n! in base 4. 13
 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 1, 2, 3, 1, 2, 3, 1, 3, 1, 3, 1, 3, 1, 1, 2, 1, 3, 2, 1, 3, 2, 1, 1, 3, 2, 1, 1, 1, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 1, 1, 1, 2, 2, 3, 1, 1, 2, 2, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 2, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS MATHEMATICA f[n_]:=First[IntegerDigits[n!, 4]]; lst={}; Do[AppendTo[lst, f[n]], {n, 0, 2*5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 14 2009 *) PROG (PARI) a(n) = digits(n!, 4)[1]; \\ Michel Marcus, Jan 27 2015 CROSSREFS Cf. A000142, A136691, A136754, A136756, A136757, A136758, A136759, A136760, A008905, A136761, A136762, A136763, A136764, A136765, A136766. Sequence in context: A300396 A300356 A082069 * A156775 A064693 A325614 Adjacent sequences:  A136752 A136753 A136754 * A136756 A136757 A136758 KEYWORD base,easy,nonn AUTHOR Carl R. White, Jan 21 2008 STATUS approved

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Last modified May 27 21:14 EDT 2022. Contains 354110 sequences. (Running on oeis4.)