Number of hands of n points in Spanish dominoes.

Terms

a(0) =3a(1) =9a(2) =29a(3) =67a(4) =147a(5) =283a(6) =526a(7) =893a(8) =1470a(9) =2287a(10) =3451a(11) =4990a(12) =7030a(13) =9559a(14) =12697a(15) =16375a(16) =20664a(17) =25406a(18) =30621a(19) =36034a(20) =41618a(21) =47022a(22) =52174a(23) =56696a(24) =60548a(25) =63362a(26) =65186a(27) =65746a(28) =65186a(29) =63362