"Model 1" for number of free alkanes on n points.

Terms

a(0) =1a(1) =1a(2) =3a(3) =11a(4) =35a(5) =107a(6) =339a(7) =1073a(8) =3375a(9) =10633a(10) =33525a(11) =105651a(12) =332941a(13) =1049305a(14) =3306957a(15) =10421967a(16) =32845327a(17) =103513709a(18) =326228241a(19) =1028123557a(20) =3240180157a(21) =10211580633a(22) =32182277499a(23) =101423965833a(24) =319642412979