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

Terms

a(0) =0a(1) =0a(2) =3a(3) =4a(4) =11a(5) =16a(6) =32a(7) =49a(8) =87a(9) =137a(10) =231a(11) =369a(12) =608a(13) =978a(14) =1595a(15) =2574a(16) =4179a(17) =6754a(18) =10944a(19) =17699a(20) =28655a(21) =46355a(22) =75023a(23) =121379a(24) =196416a(25) =317796a(26) =514227a(27) =832024a(28) =1346267