1,1

Table of n, a(n) for n=1..67.

a(2)=3 since there is only one positive number which is three times the sum of its digits, namely 27=3*9

Cf. A003634, A052489, A003635.

Sequence in context: A045506 A007494 A258575 * A248562 A117672 A194383

Adjacent sequences: A052487 A052488 A052489 * A052491 A052492 A052493

base,nonn

Henry Bottomley, Mar 16 2000

approved