G.f.: exp( Sum_{n>=1} A002129(n^2)*x^n/n ), where A002129(n) is the excess of sum of odd divisors of n over sum of even divisors of n.

A225925

G.f.: exp( Sum_{n>=1} A002129(n^2)*x^n/n ), where A002129(n) is the excess of sum of odd divisors of n over sum of even divisors of n.

Terms

    a(0) =1a(1) =1a(2) =-2a(3) =2a(4) =-1a(5) =-7a(6) =8a(7) =-14a(8) =1a(9) =11a(10) =-23a(11) =43a(12) =-54a(13) =38a(14) =17a(15) =-55a(16) =162a(17) =-198a(18) =257a(19) =-175a(20) =69a(21) =141a(22) =-518a(23) =764a(24) =-1049a(25) =1215a(26) =-1241a(27) =549a(28) =161a(29) =-1625

External references