34901461domain: NAppears in sequencesCarmichael numbers of the form C = (30n-17)*(90n-53)*(150n-89).at n=2A182133Carmichael numbers of the form (60k+13)*(180k+37)*(300k+61).at n=1A182416Carmichael numbers n such that n-1 is not a practical number.at n=10A265827