28689

Appears in sequences

• Number of n X n binary arrays with rows and columns, considered as graycode numbers, in nondecreasing order, and no more than 4 ones in any row or column.at n=4A162068
• Total Wiener index of double-star trees with n nodes.at n=34A186235
• T(n,k) = count of degree k monomials in the complete homogeneous symmetric polynomials h(mu,k) summed over all partitions mu of n.at n=30A209666
• Number of partitions of n where each part i is marked with a word of length i over a ternary alphabet whose letters appear in alphabetical order.at n=8A261737
• Numbers n such that n*2^2203 - 1 is prime.at n=34A265503
• Number of equivalence classes of convex lattice polygons of genus n.at n=15A322343