Sequence is {a(3,n)}, where a(m,n) is defined at sequence A110665.

Terms

a(0) =0a(1) =1a(2) =3a(3) =3a(4) =-3a(5) =-15a(6) =-27a(7) =-32a(8) =-30a(9) =-30a(10) =-42a(11) =-66a(12) =-90a(13) =-101a(14) =-99a(15) =-99a(16) =-117a(17) =-153a(18) =-189a(19) =-206a(20) =-204a(21) =-204a(22) =-228a(23) =-276a(24) =-324a(25) =-347a(26) =-345a(27) =-345a(28) =-375a(29) =-435