Irregular triangle read by rows: T(n,k) = number of meanders with n bridges in which the first bridge is bridge k.
A259974
Irregular triangle read by rows: T(n,k) = number of meanders with n bridges in which the first bridge is bridge k.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =3a(7) =2a(8) =3a(9) =8a(10) =3a(11) =3a(12) =14a(13) =7a(14) =7a(15) =14a(16) =42a(17) =14a(18) =11a(19) =14a(20) =81a(21) =36a(22) =28a(23) =36a(24) =81a(25) =262a(26) =81a(27) =57a(28) =57a(29) =81
External references
- oeis: A259974