a(n) = (n+1)*binomial(n+1,12).

Terms

a(0) =12a(1) =169a(2) =1274a(3) =6825a(4) =29120a(5) =105196a(6) =334152a(7) =957372a(8) =2519400a(9) =6172530a(10) =14226212a(11) =31097794a(12) =64899744a(13) =130007500a(14) =251100200a(15) =469364220a(16) =851809140a(17) =1504982115a(18) =2594796750a(19) =4374736275a(20) =7225370880a(21) =11708971560a(22) =18644037360a(23) =29205813000a(24) =45060397200a(25) =68541870852