22913

Appears in sequences

• Number of necklaces with n beads of 3 colors, allowing turning over.at n=12A027671
• a(n) = n*(2*n^2 - 3*n + 4)/3.at n=33A037235
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, 1), (-1, 0), (0, -1), (0, 1), (1, -1), (1, 0), (1, 1)}.at n=6A151330
• Number of n-bead necklaces of 4 colors allowing reversal, with no adjacent beads having the same color.at n=11A208540
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 457", based on the 5-celled von Neumann neighborhood.at n=36A288399
• Numbers k such that [prime(k), prime(k+1), prime(k+2)] = [1, 2, 3] mod 11.at n=30A302767