55712domain: NAppears in sequencesNumbers n such that the decimal representation of n is contained as substring in that of the n-th pentagonal number.at n=17A179782Number of (n+2) X (4+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 1 and no column sum 1.at n=22A257443