601560

Appears in sequences

• Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1, 32*k+1 and 64*k+1 are primes.at n=8A124414
• Number of nonnegative integers with the property that their base 9/4 expansion (see A024652) has n digits.at n=14A245425