Number of n element multisets of length 3 vectors over GF(2) that sum to zero.

Terms

a(0) =1a(1) =1a(2) =8a(3) =15a(4) =50a(5) =99a(6) =232a(7) =429a(8) =835a(9) =1430a(10) =2480a(11) =3978a(12) =6372a(13) =9690a(14) =14640a(15) =21318a(16) =30789a(17) =43263a(18) =60280a(19) =82225a(20) =111254a(21) =148005a(22) =195416a(23) =254475a(24) =329095a(25) =420732a(26) =534496a(27) =672452a(28) =841160a(29) =1043460