Irregular triangle read by rows giving the total number of isomers (nonisomorphic systems) of unbranched k-4-catafusenes.

A323942

Irregular triangle read by rows giving the total number of isomers (nonisomorphic systems) of unbranched k-4-catafusenes.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =3a(6) =1a(7) =4a(8) =7a(9) =9a(10) =3a(11) =1a(12) =10a(13) =23a(14) =29a(15) =16a(16) =5a(17) =1a(18) =25a(19) =69a(20) =99a(21) =62a(22) =27a(23) =5a(24) =1a(25) =70a(26) =229a(27) =351a(28) =275a(29) =132

External references