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A104640
Number of odd digits in n^3.
7
1, 0, 1, 0, 2, 1, 2, 2, 2, 1, 4, 2, 3, 1, 4, 1, 3, 2, 2, 0, 2, 1, 3, 2, 3, 4, 3, 3, 2, 1, 4, 2, 5, 3, 2, 1, 3, 2, 5, 0, 2, 1, 4, 2, 4, 4, 3, 4, 4, 2, 4, 1, 3, 3, 4, 4, 5, 5, 4, 1, 2, 2, 2, 1, 2, 2, 3, 3, 3, 2, 6, 3, 4, 1, 3, 3, 4, 3, 4, 2, 4, 4, 5, 3, 3, 2, 3, 2, 3, 2, 6, 2, 3, 2, 5, 2, 4, 4, 4, 1
OFFSET
1,5
LINKS
FORMULA
a(n) = A196564(n^3). - Michel Marcus, Oct 05 2013
MATHEMATICA
Table[Count[IntegerDigits[n^3], _?OddQ], {n, 100}] (* Harvey P. Dale, Jun 23 2017 *)
PROG
(PARI) a(n) = my(d = digits(n^3)); sum(i=1, #d, d[i] % 2); \\ Michel Marcus, Oct 05 2013
CROSSREFS
Sequence in context: A336158 A335283 A126865 * A193335 A016727 A335420
KEYWORD
easy,nonn,base
AUTHOR
Zak Seidov, Mar 18 2005
STATUS
approved