30743

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), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.at n=10A148626
• 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, 1), (-1, 0, 0), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.at n=10A148627
• Terms of A177763 which have more than one such representation.at n=25A177766
• The non-common part of the larger number of an amicable pair.at n=24A180327
• Number of n X n symmetric 0..2 arrays with no element equal to any horizontal or vertical neighbor, containing at least one 2 and with new values 0..2 introduced in lower triangular row major order.at n=5A193308
• a(n) = number of new distinct proper angles with vertex and legs on grid points in an n X n square grid that were not found in an (n-1) X (n-1) square grid.at n=36A252592
• Composite numbers k coprime to 13 such that k divides A006190(k-Kronecker(13,k)).at n=24A327653