-3165

Appears in sequences

• Percolation series for directed square lattice.at n=12A006461
• Apply inverse of "INVERT" transform to A007097, i.e.; the coefficients of the series 1/(1 + 2x + 3x^2 + 5x^3 + 11x^4 + 31x^5 + 127x^6 + 709x^7 ... ).at n=8A058316
• Starting at n, a(n) is the minimum negative position from which a spot must be revisited on the next move, or zero if no such positions exist, according to the following rules. On the k-th step (k=1,2,3,...) move a distance of k in the direction of zero. If the number landed on has been landed on before, move a distance of k away.at n=7A324678