221682772225
domain: N
Appears in sequences
- Numbers n such that 2*n^2 - 3*n + 1 is a square.at n=9A076218
- 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=15A111766
- Denominators a(n) of Pythagorean approximations b(n)/a(n) to sqrt(8).at n=14A195538
- List of pairs of consecutive integers such that one of them is a square and their sum is also a square.at n=31A331261