A256047 a(n) = A256046(2n+1): order of all-2s configuration on the (2n+1) X (2n+1) sandpile grid graph.

8, 52, 272, 73124

Offset: 1

Author

N. J. A. Sloane, Mar 15 2015

Keywords

• nonn
• more

Links

• Laura Florescu, Daniela Morar, David Perkinson, Nicholas Salter, and Tianyuan Xu, Sandpiles and Dominos, Electronic Journal of Combinatorics, Volume 22(1), 2015.

Crossrefs

C. A256045, A256046, A256043.

Extensions

Definition corrected by M. F. Hasler, Mar 08 2018