G.f.: Sum_{n>=1} Sum_{k=0..n} binomial(n,k) * x^(k^2) * (x^n - x^k)^(n-k), ignoring the constant term.
A292808
G.f.: Sum_{n>=1} Sum_{k=0..n} binomial(n,k) * x^(k^2) * (x^n - x^k)^(n-k), ignoring the constant term.
Terms
- a(0) =2a(1) =-4a(2) =8a(3) =-6a(4) =4a(5) =-18a(6) =32a(7) =-4a(8) =0a(9) =-64a(10) =52a(11) =4a(12) =52a(13) =-70a(14) =106a(15) =-124a(16) =-78a(17) =-148a(18) =358a(19) =130a(20) =132a(21) =-490a(22) =178a(23) =-328a(24) =120a(25) =-268a(26) =424a(27) =-214a(28) =828a(29) =-522
External references
- oeis: A292808