66747

Appears in sequences

• Number of base 13 n-digit numbers with adjacent digits differing by one or less.at n=9A126367
• a(n) is the smallest natural number m such that 2^(2^k) + m is prime for k=0,1,...,n.at n=6A129613
• Least numbers k for each base b >= 2 such that N = b^(2^n) + k is prime for 7 consecutive values from n = 0 to n = 6.at n=0A225560