127728

Appears in sequences

• Number 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, 0, 0), (0, 1, 1), (1, -1, -1), (1, 1, 0)}.at n=9A150416
• Values of n such that n^a-+a are primes, a=11.at n=19A155023
• Number of terms k such that difference between halving and tripling steps in Collatz (3x+1) trajectory of k is n.at n=30A213678