Numbers of isomers of unbranched a-4-catapolypentagons - see Brunvoll reference for precise definition.

A121134

Numbers of isomers of unbranched a-4-catapolypentagons - see Brunvoll reference for precise definition.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =11a(4) =30a(5) =72a(6) =182a(7) =434a(8) =1048a(9) =2456a(10) =5752a(11) =13240a(12) =30336a(13) =68736a(14) =154912a(15) =346400a(16) =770688a(17) =1704576a(18) =3753344a(19) =8226176a(20) =17959936a(21) =39062528a(22) =84679168a(23) =182983168a(24) =394278912a(25) =847263744a(26) =1816164352a(27) =3883956224a(28) =8288010240a(29) =17649696768

External references