196920domain: NAppears in sequencesa(n) = Sum_{k=1..prime(n)-1} floor(k^5/prime(n)).at n=6A361559Expansion of e.g.f. C(x,k) satisfying C(x,k) = cosh( x*cosh(k*x*C(x,k)) ), as a triangle read by rows.at n=16A370430Expansion of e.g.f. D(x,k) satisfying D(x,k) = cosh( k*x*cosh(x*D(x,k)) ), as a triangle read by rows.at n=19A370432