Number of irredundant sets in the n-web graph.

Terms

a(0) =4a(1) =22a(2) =112a(3) =618a(4) =3044a(5) =14026a(6) =70340a(7) =347074a(8) =1713820a(9) =8430362a(10) =41516292a(11) =204628626a(12) =1008216460a(13) =4967464650a(14) =24473678612a(15) =120581823170a(16) =594106884060