Irregular triangle read by rows: T(n,k) is the number of n+2-sided polygons with the property that one makes k turns on itself while following its edges.
A342968
Irregular triangle read by rows: T(n,k) is the number of n+2-sided polygons with the property that one makes k turns on itself while following its edges.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =2a(4) =1a(5) =5a(6) =6a(7) =1a(8) =24a(9) =28a(10) =8a(11) =119a(12) =183a(13) =57a(14) =1a(15) =832a(16) =1209a(17) =432a(18) =47a(19) =6255a(20) =9514a(21) =3760a(22) =630a(23) =1a(24) =54380a(25) =82636a(26) =36352a(27) =7828a(28) =244a(29) =515284
External references
- oeis: A342968