28408

Appears in sequences

• a(n) = least k such that 1+2+...+k >= E{1,2,...,n}, where E is the 3rd elementary symmetric function.at n=49A027917
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 27 ones.at n=13A031795
• Floor((x^n - (1-x)^n)/2 +.5) where x = (sqrt(4)+1)/2 = 3/2.at n=26A136423
• G.f. A(x) satisfies A(x/A(x)) = 1/(1-x)^2.at n=6A145159
• Row sums of triangle in A147724.at n=6A147725
• 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, -1), (-1, 0, 0), (0, -1, 0), (0, 1, 1), (1, 1, 0)}.at n=8A150465
• Number of 1:4:sqrt(17) proportioned triangles on a (n+1) X (n+1) grid.at n=21A189884
• Number of partitions of n with rank 3 or higher (the rank of a partition is the largest part minus the number of parts).at n=43A363230