24185

Appears in sequences

• a(n) = integer nearest e*a(n-1), where a(0) = 1.at n=10A024581
• 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, 1), (1, -1, -1), (1, -1, 0), (1, 1, 0)}.at n=9A149182
• Number of perfect powers with distinct digits in base n.at n=12A159078
• Second elementary symmetric function of the first n terms of (1,1,2,2,3,3,4,4,...).at n=27A203246
• Number of (w,x,y,z) with all terms in {1,...,n} and w+x<y+z.at n=15A212523
• Number of nonequivalent ways to place 4 points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.at n=6A279448
• Triangle read by rows: T(n, k) is the number of nonequivalent ways to place k points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.at n=51A279453
• Number of minimal total dominating sets in the n-Andrásfai graph.at n=16A302762
• Indices where Mertens function A002321 reaches record amplitudes between zeros.at n=13A304241
• a(n) = Sum_{d|n} phi(n/d)^d, where phi = Euler totient function (A000010).at n=34A309369