130571

Appears in sequences

• Starting positions of strings of four 4's in the decimal expansion of Pi.at n=8A083616
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1)*b(n-2), where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4, and (a(n)) and (b(n)) are increasing complementary sequences.at n=18A295363