a(n) = [x^n] Product_{k=1..n} ((1 + x^k)/(1 - x^k))^(n-k+1).
A303483
a(n) = [x^n] Product_{k=1..n} ((1 + x^k)/(1 - x^k))^(n-k+1).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =64a(4) =436a(5) =3072a(6) =22096a(7) =161148a(8) =1187118a(9) =8812050a(10) =65806720a(11) =493827256a(12) =3720698056a(13) =28128081912a(14) =213258301824
External references
- oeis: A303483