55816

Appears in sequences

• E.g.f.: -tan(log(cos(x))), even powers only.at n=5A012001
• Quadruples of different integers from [ 1,n ] with no common factors between triples.at n=39A015625
• Quadruples of different integers from [ 2,n ] with no common factors between triples.at n=39A015629
• Number of (n+1)X(2+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.at n=5A235759
• Number of (n+1) X (6+1) 0..1 arrays with the sum of each 2 X 2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.at n=1A235763
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.at n=22A235765
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise.at n=26A235765
• Number of multisets of nonempty words with a total of n letters over ternary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.at n=12A293733