Number of compositions of n into parts 1, 7, and 8.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =4a(9) =6a(10) =8a(11) =10a(12) =12a(13) =14a(14) =17a(15) =23a(16) =33a(17) =47a(18) =65a(19) =87a(20) =113a(21) =144a(22) =184a(23) =240a(24) =320a(25) =432a(26) =584a(27) =784a(28) =1041a(29) =1369