a(n) = n! [x^n] exp(2*x)*(y*sinh(x*y) + cosh(x*y)) and y = sqrt(x).

A335537

a(n) = n! [x^n] exp(2*x)*(y*sinh(x*y) + cosh(x*y)) and y = sqrt(x).

Terms

    a(0) =1a(1) =2a(2) =6a(3) =23a(4) =88a(5) =332a(6) =1294a(7) =5252a(8) =21872a(9) =92888a(10) =402784a(11) =1782288a(12) =8028904a(13) =36768656a(14) =171054160a(15) =807703688a(16) =3867540736a(17) =18765870208a(18) =92212515136a(19) =458609391488

External references