200668domain: NAppears in sequencesNumber of (n+6)X13 0..1 matrices with each 7X7 subblock idempotent.at n=16A224587Numbers n such that A003144(n) = floor(alpha*n) + 1, where alpha = 1.839... is the positive real zero of x^3-x^2-x-1.at n=30A275158