Numbers k such that the concatenation of k with k+5 gives a square.

A115428

Numbers k such that the concatenation of k with k+5 gives a square.

Terms

    a(0) =1a(1) =4a(2) =20a(3) =31a(4) =14564a(5) =38239a(6) =69919a(7) =120395a(8) =426436a(9) =902596a(10) =7478020a(11) =9090220a(12) =6671332084a(13) =8114264059a(14) =8482227259a(15) =9900250996

External references