Alkane (or paraffin) numbers l(7,n).

Terms

a(0) =1a(1) =3a(2) =9a(3) =19a(4) =38a(5) =66a(6) =110a(7) =170a(8) =255a(9) =365a(10) =511a(11) =693a(12) =924a(13) =1204a(14) =1548a(15) =1956a(16) =2445a(17) =3015a(18) =3685a(19) =4455a(20) =5346a(21) =6358a(22) =7514a(23) =8814a(24) =10283a(25) =11921a(26) =13755a(27) =15785a(28) =18040a(29) =20520