a(n) = denominator(((i^n * PolyLog(1 - n, -i) + (-i)^n * PolyLog(1 - n, i))) / (4^n - 2^n)) if n > 0 and a(0) = 1. Here i denotes the imaginary unit.

A342319

a(n) = denominator(((i^n * PolyLog(1 - n, -i) + (-i)^n * PolyLog(1 - n, i))) / (4^n - 2^n)) if n > 0 and a(0) = 1. Here i denotes the imaginary unit.

Terms

    a(0) =1a(1) =2a(2) =12a(3) =56a(4) =120a(5) =992a(6) =252a(7) =16256a(8) =240a(9) =261632a(10) =132a(11) =4192256a(12) =32760a(13) =67100672a(14) =12a(15) =1073709056a(16) =8160a(17) =17179738112a(18) =14364a(19) =274877382656a(20) =6600a(22) =276a(24) =65520a(26) =12a(28) =3480

External references