44036domain: NAppears in sequencesNumbers n such that 173*2^n-1 is prime.at n=29A050838Number of 2-trees rooted at a triangle with two similar edges.at n=15A063692Numbers k such that the k-th triangular number contains only digits {0,6,9}.at n=9A119092Number of primes between (prime(n + 1))^Pi and (prime(n))^Pi.at n=31A137380