86844

Appears in sequences

• Number of 7-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=16A187177
• Numbers k such that 7*R_k - 20 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=16A256830
• Total number of colors in all colored integer partitions of n using all colors of an initial interval of the color palette such that each block of part i with multiplicity j has a pattern of i*j distinct colors in increasing order.at n=8A326649