114186domain: NAppears in sequencesG.f. satisfies: A(x) = Sum_{n>=0} x^n * Product_{k=1..n} A(x^k).at n=16A206301On a spirally numbered square grid, with labels starting at 0, this is the number of the final step that a (1,n) leaper makes before getting trapped, or -1 if it never gets trapped.at n=24A323470