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 A004428 Geometric mean of digits of n (rounded down). 5
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 1, 1, 2, 2, 2, 2, 2, 3, 0, 1, 2, 2, 2, 3, 3, 3, 4, 4, 0, 1, 2, 3, 3, 3, 4, 4, 4, 5, 0, 2, 2, 3, 4, 4, 4, 5, 5, 6, 0, 2, 3, 3, 4, 5, 5, 5, 6, 6, 0, 2, 3, 4, 4, 5, 6, 6, 6, 7, 0, 2, 3, 4, 5, 5, 6, 7, 7, 7, 0, 2, 4, 4, 5, 6, 6, 7, 8, 8, 0, 3, 4, 5, 6, 6, 7, 7, 8, 9, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS MATHEMATICA A004428[n_] := Floor[GeometricMean[IntegerDigits[n]]] PROG (PARI) A004428(n)=sqrtn(prod(i=1, #n=digits(n), n[i]), #n)\1 \\ M. F. Hasler, May 10 2015 CROSSREFS Cf. A004429, A007954,  A257830. Sequence in context: A054054 A115353 A031298 * A004429 A004426 A262188 Adjacent sequences:  A004425 A004426 A004427 * A004429 A004430 A004431 KEYWORD nonn,base AUTHOR STATUS approved

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Last modified January 26 01:48 EST 2020. Contains 331270 sequences. (Running on oeis4.)