Number of finite regions in a complete bipartite graph where the vertices in the two parts are placed on opposite sides of a parabola at integer x coordinates |x| = 1, 2, ...n.

A392426

Number of finite regions in a complete bipartite graph where the vertices in the two parts are placed on opposite sides of a parabola at integer x coordinates |x| = 1, 2, ...n.

Terms

    a(0) =0a(1) =2a(2) =13a(3) =44a(4) =111a(5) =233a(6) =444a(7) =767a(8) =1247a(9) =1925a(10) =2834a(11) =4064a(12) =5637a(13) =7641a(14) =10110a(15) =13132a(16) =16803a(17) =21182a(18) =26439a(19) =32627a(20) =39789a(21) =48111a(22) =57628a(23) =68664a(24) =81072a(25) =95078a(26) =110933a(27) =128456a(28) =148009a(29) =169949

External references