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 A227840 3^a(n) is the highest power of 3 dividing A000110(n). 1
 0, 0, 0, 0, 1, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 0, 0, 4, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 1, 0, 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 2, 1, 0, 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,9 COMMENTS This is the 3-adic valuation of the Bell numbers A000110. The 2-adic valuation is less interesting: 0, 0, 1, 0, 0, 2, 0, 0, 2, 0, 0, 1, 0, 0, 1, 0, 0, 2, 0, 0, 2, 0, 0, 1, 0, 0, 1, 0, 0, 2, 0, 0, 2, 0, 0, 1, 0, 0, 1, 0, 0, 2, 0, 0, 2, ... LINKS PROG (MAGMA) [Valuation(Bell(n), 3): n in [0..110]]; // Bruno Berselli, Aug 05 2013 CROSSREFS Cf. A000110, A007949. Sequence in context: A202717 A291195 A025439 * A116852 A269245 A321886 Adjacent sequences:  A227837 A227838 A227839 * A227841 A227842 A227843 KEYWORD nonn AUTHOR N. J. A. Sloane, Aug 05 2013 STATUS approved

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Last modified October 15 20:04 EDT 2019. Contains 328037 sequences. (Running on oeis4.)