166465

Appears in sequences

• Numbers n such that 2*n^2 - 3*n + 1 is a square.at n=5A076218
• Numbers occurring in three Pythagorean triples of the form: odd: a, (a^2-1)/2, (a^2+1)/2 or even: a, a^2/4-1, a^2/4+1.at n=7A111766
• Triangle read by rows, derived from a(n) = N*a(n-1) + a(n-2).at n=34A138765
• Denominators a(n) of Pythagorean approximations b(n)/a(n) to sqrt(8).at n=6A195538
• Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=11A253840
• List of pairs of consecutive integers such that one of them is a square and their sum is also a square.at n=15A331261