Expansion of Product_{k>=1} 1/(1 - x^k)^(sigma_1(k)-k), where sigma_1(k) = sum of divisors of k (A000203).

A318784

Expansion of Product_{k>=1} 1/(1 - x^k)^(sigma_1(k)-k), where sigma_1(k) = sum of divisors of k (A000203).

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =4a(5) =2a(6) =11a(7) =6a(8) =25a(9) =20a(10) =56a(11) =44a(12) =139a(13) =107a(14) =283a(15) =266a(16) =619a(17) =567a(18) =1317a(19) =1242a(20) =2680a(21) =2705a(22) =5403a(23) =5539a(24) =10947a(25) =11339a(26) =21291a(27) =23013a(28) =41494a(29) =45213

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