A216943 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A216943

Number of side-7 hexagonal 0..n arrays with values nondecreasing E, SW and SE

27224, 278398992, 1419691311304, 4096557367365808, 7251826449700700016, 8365565750024647646080, 6599849499864661350027328, 3706056375338247286137138225

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Row 7 of A216937

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=1

..............0.0.0.0.0.0.1..........................0.0.0.0.0.0.0

.............0.0.0.0.0.0.1.1........................0.0.0.0.0.0.0.0

............0.0.0.0.1.1.1.1.1......................0.0.0.0.0.0.0.0.0

...........0.0.0.0.1.1.1.1.1.1....................0.0.0.0.0.0.0.0.1.1

..........0.0.0.0.1.1.1.1.1.1.1..................0.0.0.0.0.0.0.1.1.1.1

.........0.0.0.0.1.1.1.1.1.1.1.1................0.0.0.0.0.0.0.1.1.1.1.1

........0.0.0.0.1.1.1.1.1.1.1.1.1..............0.0.0.0.0.0.0.1.1.1.1.1.1

.........0.0.0.1.1.1.1.1.1.1.1.1................0.0.0.0.0.0.1.1.1.1.1.1

..........0.0.1.1.1.1.1.1.1.1.1..................0.0.0.0.0.1.1.1.1.1.1

...........1.1.1.1.1.1.1.1.1.1....................0.1.1.1.1.1.1.1.1.1

............1.1.1.1.1.1.1.1.1......................1.1.1.1.1.1.1.1.1

.............1.1.1.1.1.1.1.1........................1.1.1.1.1.1.1.1

..............1.1.1.1.1.1.1..........................1.1.1.1.1.1.1

CROSSREFS

Sequence in context: A127411 A268358 A157814 * A250852 A157820 A251777

Adjacent sequences: A216940 A216941 A216942 * A216944 A216945 A216946

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 20 2012

STATUS

approved