E.g.f.: sech(sinh(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-450/6!*x^6+2940/7!*x^7...

A012518

E.g.f.: sech(sinh(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-450/6!*x^6+2940/7!*x^7...

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =-12a(5) =60a(6) =-450a(7) =2940a(8) =-14000a(9) =34272a(10) =929880a(11) =-22680240a(12) =373861224a(13) =-5345779296a(14) =65277500288a(15) =-619227292320

External references