-5029domain: ZAppears in sequencesReversion of o.g.f. for Bell numbers (A000110) omitting a(0)=1.at n=10A007311Numerator of [x^(2n)] in the Taylor expansion cos(cosec(x) - cosech(x)).at n=3A013534a(n) = Sum_{k=0..floor(n/5)} Stirling1(n - 4*k,k).at n=12A357920