177971

Appears in sequences

• Positive numbers y such that y^2 is of the form x^2 + (x+31)^2 with integer x.at n=16A157646
• a(n) is the position of the last two-tuple within the reverse lexicographic set of partitions of 2n and 2n+1, with a(1)-a(n) representing the positions of every 2-tuple partition of 2n and 2n+1.at n=39A216053