51658

Appears in sequences

• Shifts left under Weigh transform.at n=41A038073
• Numbers having four 7's in base 9.at n=27A043484
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -1, a(1) = 2, a(2) = 3, a(3) = 4.at n=21A295721