359040domain: NAppears in sequencessec(sinh(x)+sin(x))=1+4/2!*x^2+80/4!*x^4+3928/6!*x^6+359040/8!*x^8...at n=4A013031Number of 2 X 2 matrices with entries in {0,1,...,n} and odd determinant with no entry repeated.at n=32A279483Expansion of Product_{k>=1} 1/(1+x^k)^((-1)^k*k^2).at n=23A307484