148292

Appears in sequences

• Row sums of triangle A144270 (called S2hat(-1)).at n=7A144271
• Number of 2 X 2 nonsingular 0..n matrices with rows and columns in increasing order.at n=24A183762
• Triangle read by rows: T(m,n) (m >= n >= 1) = number of regions formed by drawing the line segments connecting any two of the (m+1) X (n+1) lattice points in an m X n grid of squares and extending them to the boundary of the grid.at n=33A333282