Numbers k such that both k and k+1 are sums of two positive squares in 2 or more ways.

Terms

a(0) =985a(1) =1585a(2) =1768a(3) =1780a(4) =2249a(5) =2329a(6) =2500a(7) =2929a(8) =3280a(9) =3649a(10) =3977a(11) =4264a(12) =4329a(13) =4705a(14) =4849a(15) =5017a(16) =5044a(17) =5065a(18) =5140a(19) =5161a(20) =5512a(21) =5617a(22) =5625a(23) =6340a(24) =6409a(25) =6697a(26) =7240a(27) =7684a(28) =7785a(29) =7956