Main diagonal of table A083047.

Terms

a(0) =1a(1) =5a(2) =17a(3) =36a(4) =80a(5) =164a(6) =300a(7) =575a(8) =1020a(9) =1884a(10) =3426a(11) =5921a(12) =10568a(13) =18697a(14) =31850a(15) =55716a(16) =94332a(17) =163579a(18) =282388a(19) =474625a(20) =814328a(21) =1363979a(22) =2328358a(23) =3963781a(24) =6609951a(25) =11209355a(26) =18969158a(27) =31524783a(28) =53186480a(29) =88235842