262166

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, 0, 1), (1, 1, -1), (1, 1, 1)}.at n=9A150833
• a(n) = Sum_{k=1..n} gcd(k,n)^(gcd(k,n) - 2).at n=7A342435
• If n = Sum 2^e(k), then a(n) = Sum 2^a(e(k)), with a(0) = 1.at n=39A381957