97177domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form floor((10/9)^k).at n=19A067903a(n) = 5n^4 - 4n^3 + 3n^2 - 2n + 1.at n=12A131466Number of strings of numbers x(i=1..7) in 0..n with sum i^2*x(i) equal to n*49.at n=12A183958Prime numbersat n=9352