Expansion of Ramanujan's function R(x) = 1 + Sum_{n >= 1} { x^(n*(n+1)/2) / ((1+x)(1+x^2)(1+x^3)...(1+x^n)) }.
A003406
Expansion of Ramanujan's function R(x) = 1 + Sum_{n >= 1} { x^(n*(n+1)/2) / ((1+x)(1+x^2)(1+x^3)...(1+x^n)) }.
Terms
- a(0) =1a(1) =1a(2) =-1a(3) =2a(4) =-2a(5) =1a(6) =0a(7) =1a(8) =-2a(9) =0a(10) =2a(11) =0a(12) =-1a(13) =-2a(14) =2a(15) =1a(16) =0a(17) =-2a(18) =2a(19) =-2a(20) =0a(21) =0a(22) =3a(23) =0a(24) =-2a(25) =-2a(26) =1a(27) =0a(28) =2a(29) =0
External references
- oeis: A003406