Pairs of integers (a,b) such a^2 + (a+1)^2 = b^2.

Terms

a(0) =0a(1) =1a(2) =3a(3) =5a(4) =20a(5) =29a(6) =119a(7) =169a(8) =696a(9) =985a(10) =4059a(11) =5741a(12) =23660a(13) =33461a(14) =137903a(15) =195025a(16) =803760a(17) =1136689a(18) =4684659a(19) =6625109a(20) =27304196a(21) =38613965a(22) =159140519a(23) =225058681a(24) =927538920a(25) =1311738121a(26) =5406093003a(27) =7645370045a(28) =31509019100a(29) =44560482149