a(n) = floor(binomial(n,10)/10).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =1a(12) =6a(13) =28a(14) =100a(15) =300a(16) =800a(17) =1944a(18) =4375a(19) =9237a(20) =18475a(21) =35271a(22) =64664a(23) =114406a(24) =196125a(25) =326876a(26) =531173a(27) =843628a(28) =1312311a(29) =2003001