124542domain: NAppears in sequencesPositive numbers k such that k and 2*k are anagrams in base 7 (written in base 7).at n=16A023068An Alexander sequence for the knot 8_2.at n=16A099844List of integers m>0 with m-1 and m+1 both prime, and m-2, m, m+2 all practical.at n=22A209236