158242

Appears in sequences

• Numbers n such that 2*10^n - 7 is prime.at n=20A102946
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of 2 n steps taken from {(-1, 0), (-1, 1), (1, -1), (1, 0), (1, 1)}.at n=5A151453
• Number of distinct solutions of sum{i=1..6}(x(2i-1)*x(2i)) = 0 (mod n), with x() in 0..n-1.at n=6A180798