4341763domain: NPropertiesPrimalityPrimeyesAppears in sequencesRow sums of unsigned triangle A062991.at n=9A062992Generalized Catalan numbers C(2; n).at n=10A064062Expansion of 1/(1+x*c(-2*x)), c(x) the g.f. of A000108.at n=10A114191Prime numbersat n=305563