Triangle read by rows: T(n,k) is the number of rooted planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.

A342981

Triangle read by rows: T(n,k) is the number of rooted planar maps with n edges, k faces and no isthmuses, n >= 0, k = 1..n+1.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =1a(8) =7a(9) =5a(10) =0a(11) =1a(12) =16a(13) =37a(14) =14a(15) =0a(16) =1a(17) =30a(18) =150a(19) =176a(20) =42a(21) =0a(22) =1a(23) =50a(24) =449a(25) =1104a(26) =794a(27) =132a(28) =0a(29) =1

External references