Numbers m such that T(m) + 3*T(m+1) is a square, where T = A000217.

A278310

Numbers m such that T(m) + 3*T(m+1) is a square, where T = A000217.

Terms

    a(0) =3a(1) =143a(2) =4899a(3) =166463a(4) =5654883a(5) =192099599a(6) =6525731523a(7) =221682772223

External references