The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A351994 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A351994

Number of spanning trees in a hexagon of size n in the triangular grid.
(history; published version)

#39 by N. J. A. Sloane at Sat Mar 05 01:05:54 EST 2022

STATUS

proposed

approved

#38 by Peter Kagey at Fri Mar 04 12:23:36 EST 2022

STATUS

editing

proposed

#37 by Peter Kagey at Mon Feb 28 16:47:00 EST 2022

CROSSREFS

Cf. A007341 (square in square grid), A116469 (rectangle in square grid), A174579 (triangle in triangular grid), A351888 (triangle in hexagonal grid), A352022 (hexagon in hexagonal grid).

#36 by Peter Kagey at Mon Feb 28 16:37:11 EST 2022

LINKS

Peter Kagey, <a href="/A351994/a351994.png">Image of one of the a(4) = 614482906548854364363387716704247808 spanning trees of size 4.</a>

#35 by Peter Kagey at Mon Feb 28 16:35:13 EST 2022

COMMENTS

The hexagon of size n in the triangular grid has A003215(n) vertices.

#34 by Peter Kagey at Mon Feb 28 16:33:37 EST 2022

CROSSREFS

Cf. A007341 (square in square grid), A116469 (rectangle in square grid), A174579 (triangle in triangular grid), A351888 (triangle in hexagonal grid).

#33 by Peter Kagey at Mon Feb 28 16:32:58 EST 2022

NAME

allocated for Peter KageyNumber of spanning trees in a hexagon of size n in the triangular grid.

DATA

1, 320, 2300606464, 289899537900576358400, 614482906548854364363387716704247808, 21564742087547836976004856537464240189331001616154755072, 12433415382338420812828401445037903120443542018197863908895102595928462876835840

OFFSET

0,2

CROSSREFS

Cf. A007341 (square in square grid), A174579 (triangle in triangular grid), A351888 (triangle in hexagonal grid).

KEYWORD

allocated

nonn

AUTHOR

Peter Kagey, Feb 28 2022

STATUS

approved

editing

#32 by Peter Kagey at Mon Feb 28 16:32:58 EST 2022

NAME

allocated for Peter Kagey

KEYWORD

recycled

allocated

#31 by Javier Rivera Romeu at Mon Feb 28 15:22:48 EST 2022

NAME

allocated for Javier Rivera Romeu

KEYWORD

allocated

recycled

#30 by Javier Rivera Romeu at Mon Feb 28 15:22:42 EST 2022

NAME

allocated for Javier Rivera Romeu

KEYWORD

recycled

allocated