45756

Appears in sequences

• Numbers k that divide the (right) concatenation of all numbers <= k written in base 3 (most significant digit on left).at n=35A029448
• Triangle T(n,k) read by rows: coefficients of a polynomial sequence occurring when calculating the n-th derivative of Lambert function W.at n=25A042977
• Starting positions of strings of three 3's in the decimal expansion of Pi.at n=28A083610
• Triangle read by rows: T(n,k) is the number of white corners of rank k in all the permutations of {1,2,...,n} (n>=2, 0<=k<=n-2; for definitions see the Eriksson-Linusson references).at n=22A140713
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 437", based on the 5-celled von Neumann neighborhood.at n=39A272155
• G.f. A(x) satisfies: A(x) = 1 + x + x^2 + x^3 + x^4 * A(x)^3.at n=20A346734
• Expansion of (1/x) * Series_Reversion( x / (1 + x^2 / (1 - x)^2)^2 ).at n=10A389658