54387

Appears in sequences

• Indices of primes in sequence defined by A(0) = 13, A(n) = 10*A(n-1) + 33 for n > 0.at n=13A102023
• phi(n) plus the n-th prime gives a fourth power.at n=2A114084
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.at n=15A147160