a(n) = A278296(n) - A238132(n).

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =0a(16) =0a(17) =0a(18) =0a(19) =0a(20) =0a(21) =2a(22) =2a(23) =4a(24) =6a(25) =10a(26) =14a(27) =22a(28) =28a(29) =40