1547371

Appears in sequences

• Irregular triangle, wherein row n lists in ascending order all numbers k whose arithmetic derivative k' is equal to the n-th primorial, A002110(n), and that have more than two prime factors with multiplicity. Rows of length zero are simply omitted, i.e., when A369000(n) = 0.at n=0A366890
• a(n) is the least integer k whose arithmetic derivative is equal to the n-th primorial, or 0 if no such k exists.at n=7A368703