A330684 Square roots of the positions of records in A050377, number of ways to factor n into "Fermi-Dirac primes" (A050376).

1, 2, 4, 8, 12, 16, 24, 32, 36, 48, 72, 96, 144, 288, 432, 576, 864, 1152, 1440, 1728, 2304, 2880, 4320, 4608, 5184, 5760, 6912, 7200, 8640, 10368, 11520, 14400, 20736, 23040, 25920, 28800, 34560, 41472, 43200, 51840, 57600, 82944, 86400, 100800, 103680, 115200, 129600, 172800, 207360, 230400, 259200, 345600, 388800, 403200

Offset

1,2

Comments

Like terms in A330687, also these are all found in A025487.

Links

Antti Karttunen, Table of n, a(n) for n = 1..1004 (computed from the b-file David A. Corneth computed for A330687)

Formula

a(n) = A000196(A330687(n)).

A108951(a(n)) = A000196(A330689(n)).

a(n) = A329900(A000196(A330689(n))).

Prog

(PARI) A330684(n) = sqrtint(A330687(n));

Crossrefs

Cf. A000196, A050376, A050377, A108951, A329900, A330687, A330689.

Subsequence of A025487.

Sequence in context: A246692 A181824 A326677 * A070173 A363122 A116882

Adjacent sequences: A330681 A330682 A330683 * A330685 A330686 A330687

Keyword

nonn

Author

Antti Karttunen, Dec 29 2019

Status

approved