Column 11 of table A105552.

Terms

a(0) =56a(1) =285a(2) =954a(3) =2366a(4) =4711a(5) =7936a(6) =11712a(7) =15448a(8) =18450a(9) =20155a(10) =20329a(11) =19078a(12) =16746a(13) =13780a(14) =10644a(15) =7712a(16) =5235a(17) =3325a(18) =1970a(19) =1081a(20) =544a(21) =247a(22) =99a(23) =33a(24) =8a(25) =1