a(n) = A273059(4n+3).

Terms

a(0) =17a(1) =102a(2) =260a(3) =489a(4) =682a(5) =1031a(6) =1453a(7) =1946a(8) =2511a(9) =3149a(10) =3858a(11) =4371a(12) =5200a(13) =6102a(14) =7075a(15) =8121a(16) =9238a(17) =10023a(18) =11260a(19) =12570a(20) =13951a(21) =15404a(22) =16930a(23) =18527a(24) =19632a(25) =21349a(26) =23139a(27) =25000a(28) =26281a(29) =28262