644908domain: NAppears in sequencesNumber of connected graphs on n labeled nodes on a circle with straight-line edges that don't cross.at n=8A007297Number array whose rows are the series reversions of x(1-x)/(1+x)^k, read by antidiagonals.at n=62A107111Reversion of g.f. for A162395 (squares with signs).at n=8A263843