309885

Appears in sequences

• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, 1), (0, -1), (0, 1), (1, 0)}.at n=12A151412
• Numbers k such that one of k-A001414(k) and k+A001414(k) is a prime and the other is the square of a prime.at n=31A358002