75725

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= (n-3)/3.at n=19A048032
• a(n) = (4*n^2 + 2*n - 3)*(2*n - 1)*n/3.at n=13A058581
• Number of ways to split 1, 2, 3, ..., 7n into n arithmetic progressions each with 7 terms.at n=14A104433
• Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 7 as largest digit.at n=35A257123
• Euler transform of Lucas numbers.at n=15A261031
• Number of (n+1) X (2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 0,-2 1,0 or -1,0.at n=10A264294
• Markoff spectrum N^(5)(Lambda).at n=32A293173
• Number of n-vertex, 2-edge multigraphs that are not nesting. Number of n-vertex, 2-edge multigraphs that are not crossing.at n=26A326278