Tenth column (k=9) of septinomial array A063265.

Terms

a(0) =4a(1) =37a(2) =180a(3) =640a(4) =1876a(5) =4809a(6) =11152a(7) =23905a(8) =48070a(9) =91652a(10) =167024a(11) =292747a(12) =495950a(13) =815390a(14) =1305328a(15) =2040374a(16) =3121472a(17) =4683215a(18) =6902700a(19) =10010154a(20) =14301584a(21) =20153727a(22) =28041600a(23) =38558975a(24) =52442130