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

1,1

Links

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

Formula

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

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

Prog

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

Crossrefs

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

Cf. A277014 (gives the indices of squares).

Cf. also A278232.

Sequence in context: A040164 A086353 A019786 * A067067 A119279 A344171

Adjacent sequences: A278494 A278495 A278496 * A278498 A278499 A278500

Keyword

nonn

Author

Antti Karttunen, Nov 25 2016

Status

approved