41652

Appears in sequences

• Expansion of e.g.f. arcsin(arctan(x) + log(x+1)).at n=7A012962
• T(n,k) is the number of n-step king-knight's tours (piece capable of both kinds of moves) on a k X k board summed over all starting positions.at n=39A187850
• Number of 4-step king-knight's tours (piece capable of both kinds of moves) on an n X n board summed over all starting positions.at n=5A187852
• Triangle T(n,m) read by rows: Sum_{k=1..m} binomial(2*n, n+k)*d(k), m<=n, with d(k)=A000005(k).at n=31A351145
• The number of grains of sand in the identity element for the 3D sandpile group on an n X n X n cubic grid.at n=21A351379
• Number of non-crossing antichain covers of {1,...,n} without singletons.at n=7A359984
• Triangular array read by rows. T(n,k) is the number of inequivalent (as defined below) transitive binary relations R on [n] such that |domain(R intersect R^(-1))| = k, n>=0, 0<=k<=n.at n=26A369776