18254

Appears in sequences

• Number of points on surface of hexagonal prism: 12*n^2 + 2 for n > 0 (coordination sequence for W(2)).at n=39A005914
• a(0) = 1, a(n) = 27*n^2 + 2 for n>0.at n=26A010017
• Square of the lower triangular normalized Eulerian number matrix.at n=18A027537
• Third diagonal of A027537.at n=3A027541
• Row sums of A138060.at n=27A138289
• 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, 1), (0, 1, -1), (0, 1, 1), (1, -1, 0)}.at n=9A148841
• a(n) = floor(((sqrt(sqrt(3))^3)/sqrt(Pi))^n).at n=39A255575
• Sum of the odd parts in the partitions of n into 8 parts.at n=33A309629
• The number of connected weighted cubic graphs with weight n on 6 vertices.at n=26A321306
• Expansion of 1/(2 - g^2)^2, where g = 1+x*g^2 is the g.f. of A000108.at n=6A390423