70145domain: NAppears in sequencesNumber of 0..2 arrays of length n+3 with sum no more than 4 in any length 4 subsequence (=50% duty cycle).at n=8A212226Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..4 array extended with zeros and convolved with 1,3,3,1.at n=23A222023