140604

Appears in sequences

• Number of idempotent 4X4 0..n matrices of rank 3.at n=24A224335
• a(n) is the largest possible integer value for sqrt(0 _ 1 _ 2 _ ... _ n), where one is allowed to place any mixture of +'s and *'s in the n blank spaces.at n=23A304935
• a(n) = n^4 + 14*n^3 + 63*n^2 + 98*n + 28.at n=16A346376