224256

Appears in sequences

• Number of (n+1) X (5+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock.at n=15A235951
• Number of 6-cycles in the n-Sierpinski tetrahedron graph.at n=6A292545
• Triangle T(n,k) in which the n-th row encodes the inverse of a 3n X 3n Jacobi matrix, with 1's on the lower, main, and upper diagonals in GF(2), where the encoding consists of the decimal representations for the binary rows (n >= 1, 1 <= k <= 3n).at n=53A363146