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Revision History for A116469 (Underlined text is an addition; strikethrough text is a ~~deletion~~.)
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A116469

Square array read by antidiagonals: T(m,n) = number of spanning trees in an m X n grid.
(history; published version)

#79 by Alois P. Heinz at Wed Jan 13 07:40:45 EST 2021

STATUS

editing

approved

#78 by Alois P. Heinz at Wed Jan 13 07:40:42 EST 2021

EXAMPLE

1, 1, 1, 1, 1, 1, ...

1, 4, 15, 56, 209, 780, ...

1, 15, 192, 2415, 30305, 380160, ...

1, 56, 2415, 100352, 4140081, 170537640, ...

1, 209, 30305, 4140081, 557568000, 74795194705, ...

1, 780, 380160, 170537640, 74795194705, 32565539635200, ...

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approved

editing

#77 by Peter Luschny at Mon Apr 13 07:12:27 EDT 2020

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reviewed

approved

#76 by Joerg Arndt at Mon Apr 13 04:37:38 EDT 2020

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proposed

reviewed

#75 by Seiichi Manyama at Mon Apr 13 04:15:32 EDT 2020

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editing

proposed

#74 by Seiichi Manyama at Mon Apr 13 04:15:13 EDT 2020

CROSSREFS

Diagonal gives A007341. Rows and columns 1..10 give A000012, A001353, A006238, A003696, A003779, A139400, A334002,, A334003, A334004, A334005.

#73 by Seiichi Manyama at Mon Apr 13 04:14:41 EDT 2020

CROSSREFS

Diagonal gives A007341. Rows and columns 1..710 give A000012, A001353, A006238, A003696, A003779, A139400, A334002.,

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reviewed

editing

#72 by Joerg Arndt at Mon Apr 13 02:36:22 EDT 2020

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proposed

reviewed

#71 by Michel Marcus at Mon Apr 13 02:02:18 EDT 2020

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proposed

#70 by Michel Marcus at Mon Apr 13 02:02:12 EDT 2020

PROG

(PARI) T(n, m) = polresultant(polchebyshev(n-1, 2, x/2), polchebyshev(m-1, 2, (4-x)/2)); \\ Michel Marcus, Apr 13 2020

STATUS

approved

editing

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Last modified September 1 06:23 EDT 2024. Contains 375575 sequences. (Running on oeis4.)