a(0) = 1 and a(n) = [x^n] (1 - x)^(2*n) * Legendre_P(n-1, (1 + x)/(1 - x)) for n >= 1.
A364514
a(0) = 1 and a(n) = [x^n] (1 - x)^(2*n) * Legendre_P(n-1, (1 + x)/(1 - x)) for n >= 1.
Terms
- a(0) =1a(1) =-2a(2) =0a(3) =16a(4) =0a(5) =-252a(6) =0a(7) =4800a(8) =0a(9) =-100100a(10) =0a(11) =2201472a(12) =0a(13) =-50139936a(14) =0a(15) =1170614016a(16) =0a(17) =-27839740500a(18) =0a(19) =671626956000a(20) =0a(22) =0a(24) =0a(26) =0a(28) =0a(30) =0
External references
- oeis: A364514