553762

Appears in sequences

• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n)^2, where a(0) = 2, a(1) = 3, b(0) = 1, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=20A296248
• Number of tilings of a 5 X n rectangle using n pentominoes of shapes T, W, Y, X.at n=23A366324