66830domain: NAppears in sequencesNumbers k such that 2^k + prime(k) is prime.at n=26A077375Numbers k such that either 2^k + prime(k) or 2^k - prime(k) is prime.at n=47A130640Number of length 4 1..(n+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal.at n=25A254221