114336

Appears in sequences

• G.f.: A(x) = exp( Sum_{n>=1} A162552(n) * 2*A006519(n) * x^n/n ).at n=40A161803
• Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.at n=9A285751
• Number of maximal subsets of {1..n} containing n such that it is possible to choose a different prime factor of each element (choosable).at n=48A370590