93261domain: NAppears in sequencesConcatenations C1 and C2 and C3 are all prime (see the comment lines).at n=15A034818Riordan matrix T from A084358 (lists of sets of lists) inverse to the Riordan matrix TI = 2I-A129652 formed from A000262 (number of sets of lists) and reciprocal under a partition transform.at n=30A133289