99015domain: NAppears in sequencesa(1) = 1, then add, multiply and subtract 2, 3, 4; 5, 6, 7; ... in that order.at n=14A077383Numbers k such that A145768(k) is a square.at n=39A145827Products of 5 distinct primes a,b,c,d,e, such that a+b+c+d+e are prime numbers.at n=27A178782