Number of irredundant sets in the n-trapezohedral graph.

Terms

a(0) =77a(1) =192a(2) =523a(3) =1389a(4) =3718a(5) =10048a(6) =27377a(7) =75239a(8) =208502a(9) =582141a(10) =1636305a(11) =4626548a(12) =13148533a(13) =37534128a(14) =107557937a(15) =309242349a(16) =891663491a(17) =2577397759a(18) =7466156079a(19) =21668293968a(20) =62988073938a(21) =183360687221a(22) =534427741078