A278261 a(n) = A046523(A273671(n)).

1, 8, 2, 8, 24, 24, 2, 64, 24, 24, 192, 72, 24, 24, 4, 8, 24, 96, 24, 72, 96, 24, 72, 192, 24, 3456, 192, 24, 3456, 24, 2, 216, 192, 24, 1080, 72, 24, 8640, 576, 192, 8640, 3456, 24, 1080, 3456, 192, 1080, 120, 72, 96, 120, 24, 96, 360, 72, 576, 360, 24, 192, 120, 24, 72, 6, 8, 24, 1080, 24, 5400, 8640, 24, 72, 1080, 24, 432000, 8640, 24, 3456, 12288, 24, 120

Offset

1,2

Comments

This sequence works as a "sentinel" for A273671 by matching to any sequence that is obtained as f(A273671(n)), where f(n) is any function that depends only on the prime signature of n (see the index entry for "sequences computed from exponents in ..."). The only other sequence that as of Nov 11 2016 seems to match is A106347, although more terms of the latter would be needed to better ascertain whether the connection is spurious or genuine.

Links

Antti Karttunen, Table of n, a(n) for n = 1..16384

Index entries for sequences computed from exponents in factorization of n

Formula

a(n) = A046523(A273671(n)).

Prog

(Scheme) (define (A278261 n) (A046523 (A273671 n)))

Crossrefs

Cf. A046523, A273671, A278243.

Sequences that seem to partition N into same or coarser equivalence classes: A106347

Sequence in context: A211269 A278809 A306617 * A296301 A019865 A198993

Adjacent sequences: A278258 A278259 A278260 * A278262 A278263 A278264

Keyword

nonn

Author

Antti Karttunen, Nov 16 2016

Status

approved