Triangle of coefficients in expansion of (1 + x + x^2 + x^3 + x^4)^n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =3a(9) =4a(10) =5a(11) =4a(12) =3a(13) =2a(14) =1a(15) =1a(16) =3a(17) =6a(18) =10a(19) =15a(20) =18a(21) =19a(22) =18a(23) =15a(24) =10a(25) =6a(26) =3a(27) =1a(28) =1a(29) =4