Eigenvector of triangle A124428.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =7a(5) =13a(6) =31a(7) =61a(8) =144a(9) =296a(10) =714a(11) =1534a(12) =3761a(13) =8303a(14) =20495a(15) =46115a(16) =114461a(17) =261445a(18) =651114a(19) =1503207a(20) =3749017a(21) =8726147a(22) =21788311a(23) =51072555a(24) =127698665a(25) =301244477a(26) =754496298a(27) =1790598079a(28) =4494019431a(29) =10726676701