138528domain: NAppears in sequencesTriangle related to the o.g.f.s. of the right-hand columns of A028421 (E(x,m=2,n)).at n=29A163937Number of 2 X 2 matrices with all elements in {0,1,...,n} and odd determinant.at n=24A210370Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and odd determinant.at n=12A211155