49521

Appears in sequences

• Numbers k such that k*10^k + 1 is prime.at n=7A007647
• Multiplicity of highest weight (or singular) vectors associated with character chi_187 of Monster module.at n=40A034575
• Coefficients arising in the enumeration of configurations of linear chains.at n=13A038746
• Duplicate of A007647.at n=7A098980
• Number of acute triangles, distinct up to congruence, on a centered hexagonal grid of size n.at n=19A241232
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 539", based on the 5-celled von Neumann neighborhood.at n=36A272803
• Number of nX4 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=4A302961
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=32A302965
• Number of 5Xn 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=3A302968