Number of walks of length n between non-adjacent nodes on the Petersen graph.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =9a(5) =22a(6) =77a(7) =210a(8) =673a(9) =1934a(10) =5973a(11) =17578a(12) =53417a(13) =158886a(14) =479389a(15) =1432706a(16) =4309041a(17) =12905278a(18) =38759525a(19) =116191194a(20) =348748345a(21) =1045895510a(22) =3138385581a(23) =9413758642a(24) =28244072129a(25) =84726623982a(26) =254191056757a(27) =762550800650