79040

Appears in sequences

• Number of points of l_1 norm n in the "diamond" lattice D^+_4.at n=39A035878
• Numbers k such that 10^k - prime(k) is prime.at n=9A110066
• If X_1, ..., X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 3-subsets of X containing none of X_i, (i=1,...,n).at n=37A130809
• Number of ways to place 2 nonattacking wazirs on an n X n board.at n=19A172225
• a(n) = 2^n mod n^3.at n=43A233442
• Triangle read by rows. A generalization of unsigned Lah numbers, called L[3,2].at n=24A290598
• Numerators in the expansion of the exponential generating function (1/2)*((1 + 3*x)/x)*(1 - (1 + 3*x)^(-4/3)).at n=6A290603