53544

Appears in sequences

• Numbers k > 1 such that, in base 7, k and k^2 contain the same digits in the same proportion.at n=6A061661
• Triangle, read by rows, where g.f. of row n equals the product of (1-x)^n and the g.f. of the coordination sequence for root lattice B_n, for n >= 0.at n=58A109001
• a(n) = 1728*n - 24.at n=30A157287
• Number of n X 3 binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=7A228791
• T(n,k)=Number of nXk binary arrays with top left element equal to 1 and no two ones adjacent horizontally or nw-se.at n=52A228796
• Number of 2 X 2 matrices having entries in {0,1,...,n} and determinant in the open interval (-n,n) with no entry repeated.at n=27A279273
• Expansion of (1/x) * Series_Reversion( x / ((1+x)^4-x^4) ).at n=6A369156