The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A219529 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A219529

Coordination sequence for 3.3.4.3.4 Archimedean tiling.
(history; published version)

#92 by Ray Chandler at Wed Aug 30 15:32:23 EDT 2023

STATUS

editing

approved

#91 by Ray Chandler at Wed Aug 30 15:32:16 EDT 2023

LINKS

Anton Shutov and Andrey Maleev, <a href="https://doi.org/10.1515/zkri-2020-0002">Coordination sequences of 2-uniform graphs</a>, Z. Kristallogr., 235 (2020), 157-166. See supplementary material, krb, vertex u_1.

STATUS

approved

editing

#90 by Amiram Eldar at Sat Jan 28 08:03:22 EST 2023

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reviewed

approved

#89 by Michel Marcus at Sat Jan 28 03:10:10 EST 2023

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proposed

reviewed

#88 by Rémy Sigrist at Sat Jan 28 03:09:24 EST 2023

STATUS

editing

proposed

#87 by Rémy Sigrist at Sat Jan 28 03:08:49 EST 2023

LINKS

Giedrius Alkauskas, <a href="https://arxiv.org/abs/2301.10975">Colouring tiles in an isohedral tiling: automaton, defects and grain boundaries</a>, arXiv:2301.10975 [math.CO], 2023.

STATUS

approved

editing

Discussion

Sat Jan 28

03:09

Rémy Sigrist: added link

#86 by Michael De Vlieger at Fri Mar 18 18:38:41 EDT 2022

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reviewed

approved

#85 by Michel Marcus at Fri Mar 18 18:30:11 EDT 2022

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proposed

reviewed

#84 by Jon E. Schoenfield at Fri Mar 18 18:14:50 EDT 2022

STATUS

editing

proposed

#83 by Jon E. Schoenfield at Fri Mar 18 18:14:45 EDT 2022

COMMENTS

First few terms provided by Allan C. Wechsler; Fred Lunnon and Fred Helenius gave the next few; Fred Lunnon suggested that the recurrence was a(n+3) = a(n) + 16 for n > 1. [This conjecture is true - see the CGS-NJAS link or for a proof. - N. J. A. Sloane, Dec 31 2017]

STATUS

approved

editing