57200

Appears in sequences

• Expansion of (Product_{j>=1} (1-(-x)^j) - 1)^11 in powers of x.at n=22A047649
• Non-palindromic numbers such that either x=q1.Rev[x] or Rev[x]=q2.x, where R[x]=A004086[x] and q1 or q2 are integers not divisible by 10.at n=26A071687
• Triangle of numbers {a(n,k), n >= 0, 0 <= k <= n} defined by a(0,0)=1, a(n,0)=A000670(n), a(n,n)=A000629(n), a(n,k) = a(n,k-1) + a(n-1,k-1); a(n+1,0) = Sum_{k=0..n} a(n,k).at n=30A073146
• G.f.: (1+x)/Product_{m>0} (1 - x^m).at n=39A084376
• Nonequivalent ways to place two different markers (e.g., a pair of Go stones, black and white) on an n X n grid.at n=25A242709
• Numbers that are not palindromes even after removing trailing zeros and are divisible by their reverses.at n=32A345361
• Number of ways to partition the set of vertices of a convex {n+8}-gon into 3 non-intersecting polygons.at n=25A350116
• a(n) = Sum_{k=1..n} floor(n/(2*k-1))^3.at n=37A350144
• a(n) = the hypergraph Catalan number C_3(n).at n=4A362168
• Array read by antidiagonals: A(n,k) = the hypergraph Catalan number C_k(n), n >= 0, k >= 1.at n=25A369288