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

Terms

a(0) =1a(1) =0a(2) =4a(3) =6a(4) =20a(5) =40a(6) =106a(7) =238a(8) =592a(9) =1392a(10) =3394a(11) =8118a(12) =19664a(13) =47320a(14) =114370a(15) =275806a(16) =666112a(17) =1607520a(18) =3881410a(19) =9369318a(20) =22620560a(21) =54608392a(22) =131838370a(23) =318281038a(24) =768402496a(25) =1855077840a(26) =4478562274a(27) =10812186006a(28) =26102942480a(29) =63018038200