123217domain: NPropertiesPrimalityPrimeyesAppears in sequences6th iteration of the hyperbinomial transform on the sequence of 1's.at n=5A218498a(n) = coefficient of the term that is independent of sqrt(2), sqrt(3), and sqrt(6) in the expansion of (2 + sqrt(2) + sqrt(3))^n.at n=8A377109Prime numbersat n=11581