Triangle read by rows: T(m, n) is the number of symmetric recurrent sandpiles on an m X n grid (m >= 0, 0 <= n <= m).
A348566
Triangle read by rows: T(m, n) is the number of symmetric recurrent sandpiles on an m X n grid (m >= 0, 0 <= n <= m).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =1a(4) =3a(5) =2a(6) =1a(7) =14a(8) =7a(9) =128a(10) =1a(11) =11a(12) =5a(13) =71a(14) =36a(15) =1a(16) =52a(17) =18a(18) =1358a(19) =539a(20) =43264a(21) =1a(22) =41a(23) =13a(24) =769a(25) =281a(26) =17753a(27) =6728a(28) =1a(29) =194
External references
- oeis: A348566