217201domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = floor(binomial(n,5)/5).at n=44A011851Primes p such that the 3 X 3 matrix with components (row by row) prime(k+m), 0 <= m <= 8 has zero determinant, where p = prime(k).at n=27A337160Prime numbersat n=19378