Constant term in the expansion of (1 + w + x + y + z + 1/(x*y*z) + 1/(w*y*z) + 1/(w*x*z) + 1/(w*x*y))^n.
A361678
Constant term in the expansion of (1 + w + x + y + z + 1/(x*y*z) + 1/(w*y*z) + 1/(w*x*z) + 1/(w*x*y))^n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =97a(5) =481a(6) =1441a(7) =3361a(8) =77281a(9) =647137a(10) =3195361a(11) =11674081a(12) =116286721a(13) =1147935361a(14) =7611379777a(15) =37451144641a(16) =263670781921
External references
- oeis: A361678