1,2

A023402(n) = 4 for numbers in sequence, 3 for numbers not in sequence.

Table of n, a(n) for n=1..69.

3 is not in sequence because A035014(3) begins with 3.

Cf. A035014, A023402, A241687 (complement).

Sequence in context: A140486 A138327 A057244 * A035487 A299637 A190889

Adjacent sequences: A241669 A241670 A241671 * A241673 A241674 A241675

nonn,base

J. Lowell, Apr 26 2014

More terms from R. J. Mathar, May 02 2014

approved