174507domain: NAppears in sequencesQuotient of the decimal representation of concatenated twin primes in reverse divided by 3.at n=24A129910Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.at n=9A150529