Number of graph minors in the n-book graph.

Terms

a(0) =13a(1) =60a(2) =262a(3) =957a(4) =2934a(5) =7786a(6) =18434a(7) =39869a(8) =80166a(9) =151830a(10) =273540a(11) =472363a(12) =786516a(13) =1268760a(14) =1990516a(15) =3046799a(16) =4562072a(17) =6697128a(18) =9657114a(19) =13700817a(20) =19151338a(21) =26408286a(22) =35961630a(23) =48407353a(24) =64465058a(25) =84997682a(26) =111033480a(27) =143790447a(28) =184703352a(29) =235453564