46069729

Appears in sequences

• Square array T(M,N) read by antidiagonals: number of dimer tilings of a 2*M X 2*N Moebius strip.at n=40A103997
• Triangle read by rows: order of all-2s configuration on the n X k sandpile grid graph.at n=34A256045
• a(n) = 2^n * sqrt(Resultant(U_{2*n}(x/2), T_{2*n}(i*x/2))), where T_n(x) is a Chebyshev polynomial of the first kind, U_n(x) is a Chebyshev polynomial of the second kind and i = sqrt(-1).at n=4A334124
• Number of dimer tilings of a 2*n x 8 Moebius strip.at n=4A334180
• Triangle read by rows: T(m, n) is the number of symmetric recurrent sandpiles on an m X n grid (m >= 0, 0 <= n <= m).at n=43A348566