26830

Appears in sequences

• a(n) = 6*binomial(n,4) + 3*binomial(n,3) + 4*binomial(n,2) - n + 2.at n=18A066375
• Upper bound on number of regular triangulations of cyclic polytope C(n, n-4).at n=37A066456
• Triangle T(n, k) read by rows; given by [1, 0, 0, 0, 0, ...] DELTA [1, 1, 2, 5, 14, 42, 132, 429, 1430, ...] (A000108) where DELTA is Deléham's operator defined in A084938.at n=33A085792
• Hyperbinomial transform of the sequence of 1's.at n=6A088957
• Square array A(n,m), n>=0, m>=0, read by antidiagonals: A(n,m) = n-th number of the m-th iteration of the hyperbinomial transform on the sequence of 1's.at n=34A144303
• Number of partitions p of n such that median(p) <= multiplicity(max(p)).at n=45A240208
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 499", based on the 5-celled von Neumann neighborhood.at n=32A272562
• Number of length-n binary words such that every conjugate (cyclic shift) is rich.at n=18A306316