53321domain: NAppears in sequencesDenominators of sequence of fractions defined by a(1) = a(2) = 1; for n > 2, a(n) = (a(n-1)+a(n-2)+1)/a(n-2).at n=10A076843Inverse binomial transform of A003950.at n=6A108983Number of partitions of 2n that describe the degree sequence of exactly one labeled multigraph with no loops.at n=41A328863