Second binomial transform of expansion of cosh(sinh(x)).

Terms

a(0) =1a(1) =2a(2) =5a(3) =14a(4) =45a(5) =162a(6) =641a(7) =2718a(8) =12249a(9) =58370a(10) =294493a(11) =1571374a(12) =8858053a(13) =52542882a(14) =326804185a(15) =2122860862a(16) =14366452913a(17) =101063123202a(18) =738075208501