Numbers k such that the distance between the k-th triangular number and the nearest square is at most 1.

A229083

Numbers k such that the distance between the k-th triangular number and the nearest square is at most 1.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =15a(6) =25a(7) =32a(8) =49a(9) =90a(10) =148a(11) =189a(12) =288a(13) =527a(14) =865a(15) =1104a(16) =1681a(17) =3074a(18) =5044a(19) =6437a(20) =9800a(21) =17919a(22) =29401a(23) =37520a(24) =57121a(25) =104442a(26) =171364a(27) =218685a(28) =332928a(29) =608735

External references