Numbers which are one less than a perfect square that cannot otherwise be written as a power.

Terms

a(0) =3a(1) =8a(2) =24a(3) =35a(4) =48a(5) =99a(6) =120a(7) =143a(8) =168a(9) =195a(10) =224a(11) =288a(12) =323a(13) =360a(14) =399a(15) =440a(16) =483a(17) =528a(18) =575a(19) =675a(20) =783a(21) =840a(22) =899a(23) =960a(24) =1088a(25) =1155a(26) =1224a(27) =1368a(28) =1443a(29) =1520