Interlaces "2*n^2 - 1 is a square" with NSW numbers.

Terms

a(0) =1a(1) =1a(2) =5a(3) =7a(4) =29a(5) =41a(6) =169a(7) =239a(8) =985a(9) =1393a(10) =5741a(11) =8119a(12) =33461a(13) =47321a(14) =195025a(15) =275807a(16) =1136689a(17) =1607521a(18) =6625109a(19) =9369319a(20) =38613965a(21) =54608393a(22) =225058681a(23) =318281039a(24) =1311738121a(25) =1855077841a(26) =7645370045a(27) =10812186007a(28) =44560482149a(29) =63018038201