28176

Appears in sequences

• Number of inequivalent ways to color vertices of a regular tetrahedron using <= n colors.at n=24A006008
• Triangle read by rows: T(n,k) is number of paths from (0,0) to (3n,0) that stay in the first quadrant (but may touch the horizontal axis), consisting of steps u=(2,1),U=(1,2), or d=(1,-1) and have k pyramids of the first kind (a pyramid of the first kind is a sequence u^pd^p for some positive integer p, starting at the x-axis).at n=39A108451
• a(n) = 49*n^2 - 2*n.at n=23A157362
• Let S denote the palindromes in the language {0,1,2,...,n-1}*; a(n) = number of words of length 4 in the language SS.at n=23A187277
• Meandric numbers for a river crossing up to 10 parallel roads at n points.at n=12A209622
• Number of n X 3 0..2 arrays with rows unimodal and columns nondecreasing.at n=6A224185
• T(n,k) = Number of n X k 0..2 arrays with rows unimodal and columns nondecreasing.at n=42A224190
• Number of 7Xn 0..2 arrays with rows unimodal and columns nondecreasing.at n=2A224194
• Number of (n+1) X (1+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=4A237242
• Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=0A237246
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=10A237249
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=14A237249
• Numbers whose base-4 representation is a square when read in base 10.at n=21A267764
• Numbers k such that Bernoulli number B_{k} has denominator 46410.at n=5A295590
• Number of regions in an equilateral triangle "frame" of size n.at n=14A328526
• Expansion of (Sum_{k>=0} binomial(4*k,k) * x^k)^4.at n=4A378484