Trapezoidal matrix T(n,k) (n>=1, 1<=k<=n+2) read by rows, arising in enumeration of unbranched k-4-catafusenes.
A323943
Trapezoidal matrix T(n,k) (n>=1, 1<=k<=n+2) read by rows, arising in enumeration of unbranched k-4-catafusenes.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =3a(4) =7a(5) =5a(6) =1a(7) =9a(8) =24a(9) =22a(10) =8a(11) =1a(12) =27a(13) =81a(14) =90a(15) =46a(16) =11a(17) =1a(18) =81a(19) =270a(20) =351a(21) =228a(22) =79a(23) =14a(24) =1a(25) =243a(26) =891a(27) =1323a(28) =1035a(29) =465
External references
- oeis: A323943