23429158domain: NAppears in sequencesAntidiagonal sums of the slanted Catalan convolution table A100247.at n=22A100249A Catalan transform of the Fibonacci numbers.at n=15A109262Number of lattice paths from (0,0) to (i,n-2*i) that do not go above the diagonal x=y using steps in {(1,0), (0,1)}.at n=44A357654