25898

Appears in sequences

• Write the numbers from 1 to n^2 in a spiraling square; a(n) is the total of the sums of the two diagonals.at n=27A059924
• 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, -1, 1), (-1, 0, 1), (1, 0, -1), (1, 1, 0)}.at n=9A149148
• a(n) = 49*n^2 - n.at n=22A157923
• a(n) = 529*n^2 - 23.at n=6A158633
• Guttmann-Torrie simple cubic lattice series coefficients c_n^{22}(Pi/2).at n=9A259810
• Number of nX3 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=15A280435