Number of minimal total dominating sets in the 4 X n king graph.

Terms

a(0) =1a(1) =1a(2) =15a(3) =52a(4) =141a(5) =801a(6) =2950a(7) =9792a(8) =47527a(9) =193530a(10) =748908a(11) =3136113a(12) =12662762a(13) =51628821a(14) =215202537a(15) =877488961a(16) =3564479615a(17) =14617739032a(18) =59930350355a(19) =245634413693