363002domain: NAppears in sequencesarctan(tanh(x)*sinh(x))=2/2!*x^2-4/4!*x^4-178/6!*x^6+5336/8!*x^8...at n=4A012693Semiprimes that are sums of squares of two consecutive primes.at n=14A216432Least number k such that A304036(k) = n.at n=32A304039