Primes equal to an octagonal number plus 1.

Terms

a(0) =2a(1) =41a(2) =97a(3) =281a(4) =409a(5) =937a(6) =1409a(7) =2297a(8) =4721a(9) =5209a(10) =6257a(11) =8009a(12) =8641a(13) =12161a(14) =14561a(15) =18097a(16) =21001a(17) =23057a(18) =24121a(19) =26321a(20) =27457a(21) =37409a(22) =42961a(23) =50441a(24) =52009a(25) =55217a(26) =56857a(27) =60209a(28) =70841a(29) =76481