Alkyl naphthalenes C_{n+10} H_{2n+8} with n+10 carbon atoms.

Terms

a(0) =1a(1) =2a(2) =12a(3) =32a(4) =110a(5) =310a(6) =920a(7) =2558a(8) =7177a(9) =19660a(10) =53864a(11) =146180a(12) =396296a(13) =1070296a(14) =2888662a(15) =7785856a(16) =20982905a(17) =56536762a(18) =152378548a(19) =410825678a(20) =1108224556a(21) =2991244712a(22) =8079252116a(23) =21837144430a(24) =59066580606a(25) =159886668880a(26) =433122375508