360960

Appears in sequences

• Number of length n left factors of Dyck paths having no UDUD's; here U=(1,1) and D=(1,-1).at n=23A191792
• Number of 2 X 2 matrices having all terms in {1,...,n} and odd determinant.at n=30A211065
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and odd determinant.at n=15A211155
• Number of nX6 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.at n=1A269212
• T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.at n=22A269214
• Number of 2 X n 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three exactly once.at n=5A269215