Expansion of e.g.f.: cosh(sqrt(2)*x)*(1+exp(x)).

Terms

a(0) =2a(1) =1a(2) =5a(3) =7a(4) =21a(5) =41a(6) =107a(7) =239a(8) =593a(9) =1393a(10) =3395a(11) =8119a(12) =19665a(13) =47321a(14) =114371a(15) =275807a(16) =666113a(17) =1607521a(18) =3881411a(19) =9369319a(20) =22620561a(21) =54608393a(22) =131838371a(23) =318281039a(24) =768402497a(25) =1855077841a(26) =4478562275a(27) =10812186007a(28) =26102942481a(29) =63018038201