Values of m such that m^2 + 6 is a triangular number (A000217).

Terms

a(0) =0a(1) =2a(2) =3a(3) =7a(4) =15a(5) =20a(6) =42a(7) =88a(8) =117a(9) =245a(10) =513a(11) =682a(12) =1428a(13) =2990a(14) =3975a(15) =8323a(16) =17427a(17) =23168a(18) =48510a(19) =101572a(20) =135033a(21) =282737a(22) =592005a(23) =787030a(24) =1647912a(25) =3450458a(26) =4587147a(27) =9604735a(28) =20110743a(29) =26735852