120577

Properties

Appears in sequences

• a(n) = A000045(n) - A000931(n).at n=26A129973
• 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, 0, 0), (0, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, -1)}.at n=11A148676
• Number of 5Xn 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=9A302430
• First of three consecutive primes p, q, r such that p + q - r, p^2 + q^2 - r^2 and p^3 + q^3 - r^3 are all prime.at n=41A358744
• Prime numbersat n=11347