31367domain: NAppears in sequencesIrregular array where the n-th row are the divisors, not occurring earlier in the sequence, of the sum of the terms in all previous rows. a(1)=3.at n=44A120577Least semiprime of a run of exactly n odd semiprimes.at n=19A304457Numbers whose squares have at most 2 digits less than 8.at n=60A360822