55544

Appears in sequences

• Numbers k such that 6*R_k + 1 is a prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=30A096507
• Number of 3-step knight's tours on an (n+2) X (n+2) board summed over all starting positions.at n=31A186852
• Compositions of n into parts 3, 5 and 7.at n=53A245367
• Numbers n such that n^2+k-1 is the sum of two nonzero squares in exactly k ways for all k = 1, 2, 3.at n=3A273341