67234

Appears in sequences

• a(n) is the smallest k >= 2 such that k^(2^n)+1 is prime, or -1 if no such k exists.at n=14A056993
• Number of permutations of length n which avoid the patterns 2341, 4213.at n=9A116709
• Number of 6-step S, NW and NE-moving king's tours on an n X n board summed over all starting positions.at n=21A187380
• Numbers k such that k^(2^14) + 1 is prime (a generalized Fermat prime).at n=1A226529
• Number of nX4 0..1 arrays with every element unequal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.at n=13A316753