1,1

a(n)=A069554[7^n]

See A071686.

Cf. A004086, A055483, A069554, A071686[=2^n], A072005[=3^n], A072021[=5^n].

Sequence in context: A134645 A115997 A013786 this_sequence A156169 A158898 A068251

Adjacent sequences: A072047 A072048 A072049 this_sequence A072051 A072052 A072053

more,nonn

Labos E. (labos(AT)ana.sote.hu), Jun 10 2002