141260

Appears in sequences

• Number of triangles in an n X n unit grid that have minimal possible area (of 1/2).at n=21A088658
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2) + 1, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=20A294551