-835

Appears in sequences

• Bond percolation series for hexagonal net.at n=6A006735
• Triangle T, read by rows, equal to the matrix inverse of the triangle defined by [T^-1](n,k) = (n-k)!*A008278(n+1,k+1), for n>=k>=0, where A008278 is a triangle of Stirling numbers of 2nd kind.at n=17A106340
• A signed variant of the Motzkin numbers.at n=10A166587
• Expansion of (1+x+sqrt(1-2x-3x^2))/2.at n=11A168051
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 313", based on the 5-celled von Neumann neighborhood.at n=17A271203
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 443", based on the 5-celled von Neumann neighborhood.at n=17A272228
• Expansion of (1 - x + sqrt(1 - 2*x - 3*x^2))/2 in powers of x.at n=11A292440
• Expansion of 1/(1 - Sum_{k>=1} mu(k)*x^k), where mu() is the Moebius function (A008683).at n=24A300663