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A256047 a(n) = A256046(2n+1): order of all-2s configuration on the (2n+1) X (2n+1) sandpile grid graph. 3
8, 52, 272, 73124 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

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

CROSSREFS

C. A256045, A256046, A256043.

Sequence in context: A055283 A193427 A022732 * A227732 A000432 A153336

Adjacent sequences:  A256044 A256045 A256046 * A256048 A256049 A256050

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Mar 15 2015

EXTENSIONS

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

STATUS

approved

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Last modified December 3 22:32 EST 2021. Contains 349468 sequences. (Running on oeis4.)