Centered 4-dimensional orthoplex numbers (crystal ball sequence for 4-dimensional cubic lattice).

Terms

a(0) =1a(1) =9a(2) =41a(3) =129a(4) =321a(5) =681a(6) =1289a(7) =2241a(8) =3649a(9) =5641a(10) =8361a(11) =11969a(12) =16641a(13) =22569a(14) =29961a(15) =39041a(16) =50049a(17) =63241a(18) =78889a(19) =97281a(20) =118721a(21) =143529a(22) =172041a(23) =204609a(24) =241601a(25) =283401a(26) =330409a(27) =383041a(28) =441729a(29) =506921