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A277705 Number of divisors in A260443(n). 3
1, 2, 2, 4, 2, 6, 4, 8, 2, 12, 6, 16, 4, 18, 8, 16, 2, 24, 12, 32, 6, 40, 16, 48, 4, 48, 18, 64, 8, 54, 16, 32, 2, 48, 24, 96, 12, 120, 32, 120, 6, 150, 40, 168, 16, 180, 48, 144, 4, 144, 48, 192, 18, 240, 64, 240, 8, 192, 54, 256, 16, 162, 32, 64, 2, 96, 48, 288, 24, 480, 96, 400, 12, 560, 120, 540, 32, 480, 120, 480, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..8192

FORMULA

a(n) = A000005(A260443(n)).

a(n) = A106737(A277020(n)).

PROG

(Scheme)

(define (A277705 n) (fold-left (lambda (a e) (* (+ 1 e) a)) 1 (A260443as_coeff_list n))) ;; A260443as_coeff_list given in A260443.

CROSSREFS

Cf. A000005, A106737, A260443, A277020.

Cf. also A277325, A277326 (compare the scatter-plots).

Sequence in context: A286553 A278222 A286588 * A028913 A185048 A240828

Adjacent sequences:  A277702 A277703 A277704 * A277706 A277707 A277708

KEYWORD

nonn,look

AUTHOR

Antti Karttunen, Oct 27 2016

STATUS

approved

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Last modified July 19 12:35 EDT 2019. Contains 325159 sequences. (Running on oeis4.)