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A271848 Number of ways to move elements of an nXnXn triangular array to themselves or a neighbor, with no 2-cycles and with no more than 4-1 elements moved to themselves. 0
1, 3, 22, 304, 11246, 932092, 170786194, 70031967880, 63448846953258, 128002469163212148 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A271852.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=4

.....0........0........6........6........0........5........6........6

....4.6......5.0......2.3......2.3......4.6......6.1......2.3......2.5

...6.1.3....5.1.3....4.4.5....0.6.3....2.5.3....5.2.5....6.0.5....6.1.5

..2.3.0.0..4.4.2.0..0.1.3.0..0.0.4.1..2.3.0.0..4.1.4.1..2.3.4.1..2.3.4.1

Element moves: 0=itself 1=nw 2=ne 3=w 4=e 5=sw 6=se, reciprocals total 7

CROSSREFS

Cf. A271852.

Sequence in context: A298693 A326430 A119390 * A144681 A305963 A261280

Adjacent sequences:  A271845 A271846 A271847 * A271849 A271850 A271851

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 15 2016

STATUS

approved

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Last modified October 20 10:43 EDT 2021. Contains 348100 sequences. (Running on oeis4.)