221344

Appears in sequences

• Number of nX3 0..1 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope.at n=10A223587
• Number of length n+3 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=27A256818
• Numbers k such that in base 2 the k-th composite is a substring of the k-th prime.at n=23A378479