a(n) is the number of permutations of 1..n that win this game. Take a shuffled pack of cards labeled 1..n, repeat this: look at the top card's value, X. Move X cards from the top of the deck to the back, one at a time. If you ever end up with the first card back at the top, you win.

A389415

a(n) is the number of permutations of 1..n that win this game. Take a shuffled pack of cards labeled 1..n, repeat this: look at the top card's value, X. Move X cards from the top of the deck to the back, one at a time. If you ever end up with the first card back at the top, you win.