1,1

123456789059 is in the sequence because (1+2+3+4+5+6+7+8+9+0) = (5*9) = 45.

Carole Dubois, Table of n, a(n) for n = 1..5000

Cf. A034710.

Sequence in context: A060314 A337240 A109303 * A068520 A171901 A033283

Adjacent sequences: A338211 A338212 A338213 * A338215 A338216 A338217

base,nonn

Eric Angelini and Carole Dubois, Oct 16 2020

approved