229698

Appears in sequences

• Number of n X 2 1..5 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.at n=9A166816
• Number of Hamiltonian cycles in C_7 X P_n.at n=5A180583
• Array read by antidiagonals: T(n,k) is the number of Hamiltonian cycles in the stacked prism graph P_n X C_k, n >= 1, k >= 2.at n=60A359855