125973

Appears in sequences

• a(n+3) = 2a(n+2) - 3a(n+1) + 2a(n); a(0) = 1, a(1) = 3, a(2) = 4.at n=33A105579
• Arithmetic mean of two consecutive prime interprimes of second order: interprimes of third order.at n=16A126556
• Base-5 Keith numbers.at n=22A187713