Irregular table read by rows: Take a nonagon with all diagonals drawn, as in A332421. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.
A332427
Irregular table read by rows: Take a nonagon with all diagonals drawn, as in A332421. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.
Terms
- a(0) =90a(1) =36a(2) =18a(3) =9a(4) =0a(5) =0a(6) =1a(7) =1332a(8) =918a(9) =414a(10) =90a(11) =6525a(12) =6453a(13) =2529a(14) =1071a(15) =171a(16) =90a(17) =10a(18) =9a(19) =22248a(20) =18882a(21) =10368a(22) =2988a(23) =486a(24) =108a(25) =18a(26) =54558a(27) =50985a(28) =24750a(29) =9387
External references
- oeis: A332427