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A217232 T(n,k)=Number of triangular nXnXn arrays of occupancy after each element moves to some neighbor but without 2-loops and with no occupancy greater than k. 4
0, 0, 1, 0, 1, 1, 0, 1, 26, 1, 0, 1, 47, 1755, 1, 0, 1, 47, 4830, 321848, 1, 0, 1, 47, 5167, 1686393, 178829423, 1, 0, 1, 47, 5227, 1950380, 2096316167 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,9

COMMENTS

Table starts

.0.........0..........0.......0....0..0.0.0

.1.........1..........1.......1....1..1.1

.1........26.........47......47...47.47

.1......1755.......4830....5167.5227

.1....321848....1686393.1950380

.1.178829423.2096316167

LINKS

Table of n, a(n) for n=1..34.

EXAMPLE

Some solutions for n=4 k=3

.....0........0........0........0........1........0........1........1

....0.2......2.0......0.2......3.2......0.2......2.0......1.2......2.0

...3.2.1....0.2.1....1.1.3....2.1.1....1.2.0....1.3.2....0.1.0....2.3.0

..0.0.2.0..1.1.3.0..0.1.2.0..0.0.0.1..1.2.1.0..0.1.1.0..1.2.2.0..0.1.1.0

CROSSREFS

Sequence in context: A023924 A022066 A291551 * A040681 A040682 A040683

Adjacent sequences:  A217229 A217230 A217231 * A217233 A217234 A217235

KEYWORD

nonn,tabl,hard,more

AUTHOR

R. H. Hardin Sep 28 2012

STATUS

approved

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Last modified May 25 21:17 EDT 2022. Contains 354071 sequences. (Running on oeis4.)