Number of strict (-1)st-order maximal independent sets in cycle graph.

Terms

a(0) =0a(1) =0a(2) =0a(3) =4a(4) =5a(5) =15a(6) =21a(7) =44a(8) =66a(9) =120a(10) =187a(11) =319a(12) =507a(13) =840a(14) =1348a(15) =2204a(16) =3553a(17) =5775a(18) =9329a(19) =15124a(20) =24454a(21) =39600a(22) =64055a(23) =103679a(24) =167735a(25) =271440a(26) =439176a(27) =710644a(28) =1149821a(29) =1860495