Triangle T(n,k) read by rows: T(n,k) is the number of iterations to reach a final state for an n X k lattice of sandpiles on a torus according to rules specified in A249872.
A293452
Triangle T(n,k) read by rows: T(n,k) is the number of iterations to reach a final state for an n X k lattice of sandpiles on a torus according to rules specified in A249872.
Terms
- a(0) =0a(1) =1a(2) =7a(3) =2a(4) =14a(5) =28a(6) =7a(7) =35a(8) =65a(9) =133a(10) =10a(11) =47a(12) =86a(13) =198a(14) =316a(15) =22a(16) =86a(17) =134a(18) =331a(19) =487a(20) =913a(21) =28a(22) =106a(23) =164a(24) =399a(25) =696a(26) =1099a(27) =1360a(28) =50a(29) =159
External references
- oeis: A293452