A278497 a(n) = Least number with the prime signature of A276573(n).

2, 6, 8, 2, 6, 16, 12, 6, 24, 8, 30, 32, 6, 6, 24, 2, 12, 48, 6, 2, 24, 2, 12, 64, 2, 30, 72, 12, 30, 48, 2, 6, 24, 60, 6, 96, 12, 30, 30, 72, 48, 6, 12, 120, 6, 60, 128, 2, 6, 24, 2, 6, 144, 12, 2, 24, 6, 6, 96, 48, 30, 120, 12, 2, 48, 2, 6, 30, 24, 192, 30, 60, 72, 6, 12, 210, 6, 216, 6, 6, 96, 2, 30, 2, 12, 240, 32, 12, 24, 2, 30, 256, 6, 12, 120, 6, 120

Offset: 1

Author

Antti Karttunen, Nov 25 2016

Keywords

• nonn

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10028

Crossrefs

Cf. A002828, A046523, A260733, A276573, A278160, A278498, A278499.

Cf. A277014 (gives the indices of squares).

Cf. also A278232.

Programs

Scheme

(define (A278497 n) (A046523 (A276573 n)))

Formula

a(n) = A046523(A276573(n)).

For all n >= 1, a(A260733(1+n)) = A278160(n).