G.f. is the polynomial (Product_{k=1..28} (1 - x^(3*k)))/(1-x)^28.
A162727
G.f. is the polynomial (Product_{k=1..28} (1 - x^(3*k)))/(1-x)^28.
Terms
- a(0) =1a(1) =28a(2) =406a(3) =4059a(4) =31437a(5) =200970a(6) =1103507a(7) =5348123a(8) =23334038a(9) =93031652a(10) =342919055a(11) =1179585092a(12) =3815546588a(13) =11679513128a(14) =34013294612a(15) =94667486901a(16) =252800596230a(17) =649910323374
External references
- oeis: A162727