45689domain: NAppears in sequencesNumbers n such that 87*2^n-1 is prime.at n=45A050569Row squared sums of Catalan triangle A033184.at n=6A116364a(1) = 1; for n > 1, a(n) is the smallest positive integer that has not yet appeared which contains all the distinct digits of the sum of all previous terms a(1)..a(n-1).at n=37A368347