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A034974

Number of divisors of binomial(n, floor(n/2)), the terms of A001405.

1, 2, 2, 4, 4, 6, 4, 8, 12, 18, 16, 24, 24, 32, 24, 48, 32, 48, 32, 48, 96, 128, 64, 96, 144, 192, 288, 384, 384, 480, 192, 384, 512, 768, 768, 1152, 1152, 1536, 1536, 2304, 1536, 2048, 1536, 2048, 3072, 3840, 2304, 3456, 3456, 4608, 4608, 6144, 3072, 3840, 6144

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OFFSET

1,2

LINKS

T. D. Noe, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = A000005(A001405(n)). - Michel Marcus, Feb 25 2014

EXAMPLE

a(59) = d(C(59,29)) = d(59132290782430712) = 8192 = 4*2^11.

MATHEMATICA

Table[DivisorSigma[0, Binomial[n, Floor[n/2]]], {n, 60}] (* Harvey P. Dale, Jun 12 2012 *)

PROG