103504domain: NAppears in sequencesNumerator of [x^(2n+1)] of the Taylor expansion -arcsin(cot(x)-coth(x)).at n=5A013553a(1)=1, a(n) = a(n-1) + n^4 if n odd, a(n) = a(n-1) + n^0 if n is even.at n=15A140157Number of 5-element subsets of [n] having a prime element sum.at n=33A320680