Sequence is {a(4,n)}, where a(m,n) is defined at sequence A110665.

Terms

a(0) =0a(1) =1a(2) =4a(3) =7a(4) =4a(5) =-11a(6) =-38a(7) =-70a(8) =-100a(9) =-130a(10) =-172a(11) =-238a(12) =-328a(13) =-429a(14) =-528a(15) =-627a(16) =-744a(17) =-897a(18) =-1086a(19) =-1292a(20) =-1496a(21) =-1700a(22) =-1928a(23) =-2204a(24) =-2528a(25) =-2875a(26) =-3220a(27) =-3565a(28) =-3940a(29) =-4375