78363domain: NAppears in sequencesFibonacci sequence with a(1) = 7 and a(2) = 26.at n=18A098127Odd numbers n divisible by 3 such that for all k >= 1 the numbers n*2^k + 1 and n*2^(k+1) + 1 do not form a pair of primes.at n=8A243857Not appropriate for the OEIS.at n=5A248691