477162domain: NAppears in sequencesNumbers n such that n*((2^61-1)^4) - 1 and n*((2^61-1)^4) + 1 are twin primes.at n=16A099231Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=7A299511