3161088

Appears in sequences

• Integer areas A of the integer-sided triangles such that the inradius and the radius of the three excircles are perfect squares.at n=17A233317
• Triangle read by rows, T(n, k) = [x^k] p(n), where p(n) = 4^n * hypergeom([1/2, -n - 1, -n], [2, 2], x).at n=41A367022