354903domain: NAppears in sequencesa(n) = A185128(n) - A185129(n).at n=16A185253Triangular numbers representable as x*y+x+y such that x and y are triangular numbers, x>=y>0.at n=41A259745Triangular numbers representable as x*y+x+y such that x and y are triangular numbers, x>=y>1.at n=35A259746