25263

Appears in sequences

• Expansion of 1/((1-x)(1-4x)(1-6x)).at n=5A016222
• Square of infinite lower triangular matrix A078122.at n=17A078123
• Sum(j=1,n,floor(A000041(j)/j)).at n=48A086736
• Exponent of least power of 2 having exactly n consecutive 8's in its decimal representation.at n=8A131542
• Number of permutations that lie in the cyclic closure of Av(132)--i.e., at least one cyclic rotation of the permutation avoids the pattern 132.at n=8A141253
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.at n=8A150392
• Number of binary strings of length n with no substrings equal to 0001 0101 or 1010.at n=15A164472
• Least power of 2 to have at least n consecutive digits 'n' in its decimal expansion.at n=8A171252
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 617", based on the 5-celled von Neumann neighborhood.at n=27A273248
• a(n) = Sum_{k=1..n} k^2*tau(k), where tau is A000005.at n=25A319085