a(n) = A026905(n) - A014284(n).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =2a(7) =7a(8) =18a(9) =37a(10) =64a(11) =110a(12) =174a(13) =268a(14) =401a(15) =585a(16) =829a(17) =1155a(18) =1584a(19) =2144a(20) =2865a(21) =3794a(22) =4970a(23) =6462a(24) =8331a(25) =10670a(26) =13579a(27) =17194a(28) =21652a(29) =27147