66530

Appears in sequences

• Number of digits in n-th even perfect number (A000396).at n=28A061193
• Indices of triple-safe primes: p=prime(n) is double-safe: q=(p-1)/2, r=(q-1)/2 and s=(r-1)/2 are all prime (and q is double-safe).at n=38A075134
• Number of regions in the hyperoctahedral (or cocktail party) graph of order n.at n=18A368755
• Consecutive states of the linear congruential pseudo-random number generator (9806*s+1) mod (2^17-1) when started at s=1.at n=5A384236