a(n) = A000931(n+4) - A010060(n).

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =1a(5) =2a(6) =3a(7) =3a(8) =4a(9) =7a(10) =9a(11) =11a(12) =16a(13) =20a(14) =27a(15) =37a(16) =48a(17) =65a(18) =86a(19) =113a(20) =151a(21) =199a(22) =264a(23) =351a(24) =465a(25) =615a(26) =815a(27) =1081a(28) =1431a(29) =1897