exp(arctanh(x)*cos(x)) = 1+x+1/2!*x^2-3/4!*x^4+45/6!*x^6+504/7!*x^7...

A012738

exp(arctanh(x)*cos(x)) = 1+x+1/2!*x^2-3/4!*x^4+45/6!*x^6+504/7!*x^7...

Terms

    a(0) =1a(1) =1a(2) =1a(3) =0a(4) =-3a(5) =0a(6) =45a(7) =504a(8) =2457a(9) =24384a(10) =161625a(11) =2375296a(12) =20549397a(13) =338479232a(14) =3457938757a(15) =64501554688a(16) =772773915313

External references