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Number of divisors in A260443(n).
3

%I #10 Oct 31 2016 10:20:40

%S 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,

%T 8,54,16,32,2,48,24,96,12,120,32,120,6,150,40,168,16,180,48,144,4,144,

%U 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

%N Number of divisors in A260443(n).

%H Antti Karttunen, <a href="/A277705/b277705.txt">Table of n, a(n) for n = 0..8192</a>

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

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

%o (Scheme)

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

%Y Cf. A000005, A106737, A260443, A277020.

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

%K nonn,look

%O 0,2

%A _Antti Karttunen_, Oct 27 2016