128064

Appears in sequences

• n times the n-th n-gonal number.at n=23A117665
• Number of 8-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=14A187178
• Number of permutations f of {1,...,n} such that prime(k) + prime(f(k)) + 1 is prime for every k = 1,...,n.at n=12A321727