Number of compositions of 8*n into parts 7 and 8.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =10a(9) =46a(10) =166a(11) =496a(12) =1288a(13) =3004a(14) =6437a(15) =12888a(16) =24464a(17) =44728a(18) =80428a(19) =146320a(20) =278104a(21) =564929a(22) =1225811a(23) =2778772a(24) =6396236a(25) =14620646a(26) =32760586a(27) =71565796a(28) =152344397a(29) =316911454