Number of self-avoiding walks on the truncated square tiling with n steps.

Terms

a(0) =1a(1) =3a(2) =6a(3) =12a(4) =22a(5) =42a(6) =80a(7) =152a(8) =284a(9) =536a(10) =988a(11) =1848a(12) =3412a(13) =6352a(14) =11724a(15) =21718a(16) =39952a(17) =73808a(18) =135668a(19) =250188a(20) =459172a(21) =844888a(22) =1548608a(23) =2845186a(24) =5211548a(25) =9563768a(26) =17501272a(27) =32079524a(28) =58660712a(29) =107425356