Irregular triangle read by rows: T(n,k) = number of ways k brooks (0 <= k <= 2n+1) can be placed on the grid points of an n triboard so that no two brooks lie in the same straight line.
A260333
Irregular triangle read by rows: T(n,k) = number of ways k brooks (0 <= k <= 2n+1) can be placed on the grid points of an n triboard so that no two brooks lie in the same straight line.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =7a(4) =6a(5) =2a(6) =1a(7) =19a(8) =87a(9) =115a(10) =30a(11) =6a(12) =1a(13) =37a(14) =417a(15) =1783a(16) =2902a(17) =1629a(18) =196a(19) =28a(20) =1a(21) =61a(22) =1278a(23) =11758a(24) =50465a(25) =99717a(26) =84366a(27) =26836a(28) =2196a(29) =244
External references
- oeis: A260333