1,2

Complement of A056709 with respect to A011540. Subsequence of A199978 (nonprime numbers (including 0) whose multiplicative digital root is 0).

Table of n, a(n) for n=1..55.

Number 102 is in sequence because 1*0*2=0.

Cf. A056709 (primes whose product of digits is 0), A034052 (numbers whose product of digits is 0).

Sequence in context: A011540 A098394 A057169 * A096092 A109597 A194233

Adjacent sequences: A201011 A201012 A201013 * A201015 A201016 A201017

nonn,base

Jaroslav Krizek, Nov 25 2011

approved