23026

Appears in sequences

• a(n) = 10000*log(n) rounded to nearest integer.at n=9A004244
• a(n) = ceiling(10000*log(n)).at n=9A004245
• Numbers k such that the continued fraction for sqrt(k) has period 65.at n=24A020404
• Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 22 (most significant digit on right).at n=32A061951
• a(n) is the position of the last two-tuple within the reverse lexicographic set of partitions of 2n and 2n+1, with a(1)-a(n) representing the positions of every 2-tuple partition of 2n and 2n+1.at n=29A216053
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 846", based on the 5-celled von Neumann neighborhood.at n=41A273689
• Number of permutations of [n] avoiding {4231, 2143, 1234}.at n=15A294708
• Number of n X 6 0..1 arrays with every element equal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.at n=14A298492
• Number of nX2 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=17A300500
• Number of perfect squares in the half-open interval [Pi^(n-1), Pi^n).at n=19A306604
• Number of 4 element sets of distinct integer sided rectangles that fill an n X n square.at n=35A387171