1048599

Appears in sequences

• From P-positions in a certain game.at n=20A081691
• a(1) = 5; a(n) is the sum of |a(m) - m| for m < n.at n=21A270841
• a(n) = [x^n] (1 - 2*x + x^2 - 2*x^3 + x^4)/((1 - x)^2*(1 - 2*x)).at n=22A323227