30970domain: NAppears in sequencesNumbers n such that { x +- 2^k : 0 < k < 4 } are primes, where x = 210*n - 105.at n=12A06167129-gonal pyramidal numbers: a(n) = n*(n+1)*(9*n-8)/2.at n=19A256649Number of fundamentally different rainbow graceful labelings of graphs with n edges.at n=5A342357