Sixth column of (1,5)-Pascal triangle A096940.

Terms

a(0) =5a(1) =26a(2) =81a(3) =196a(4) =406a(5) =756a(6) =1302a(7) =2112a(8) =3267a(9) =4862a(10) =7007a(11) =9828a(12) =13468a(13) =18088a(14) =23868a(15) =31008a(16) =39729a(17) =50274a(18) =62909a(19) =77924a(20) =95634a(21) =116380a(22) =140530a(23) =168480a(24) =200655a(25) =237510a(26) =279531a(27) =327236a(28) =381176a(29) =441936