3450458

Appears in sequences

• One half of the y members of the positive proper solutions (x = x1(n), y = y1(n)) of the first class for the Pell equation x^2 - 2*y^2 = +7^2.at n=8A275794
• Values of m such that m^2 + 6 is a triangular number (A000217).at n=25A276600