204318domain: NAppears in sequencesValues of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,29.at n=19A064251Expansion of Product_{k>=0} ((1+x^(3*k+1))/(1-x^(3*k+1)))^3.at n=23A261651