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A295560
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Same as A161644 except that triangles must always grow outwards.
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4
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0, 1, 4, 10, 16, 22, 34, 52, 64, 70, 82, 100, 118, 136, 166, 208, 232, 238, 250, 268, 286, 304, 334, 376, 406, 424, 454, 496, 538, 580, 646, 736, 784, 790, 802, 820, 838, 856, 886, 928, 958, 976, 1006, 1048, 1090, 1132, 1198, 1288, 1342, 1360, 1390, 1432, 1474
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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REFERENCES
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R. Reed, The Lemming Simulation Problem, Mathematics in School, 3 (#6, Nov. 1974), front cover and pp. 5-6. [Describes the dual structure where new triangles are joined at vertices rather than edges.]
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LINKS
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R. Reed, The Lemming Simulation Problem, Mathematics in School, 3 (#6, Nov. 1974), front cover and pp. 5-6. [Scanned photocopy of pages 5, 6 only, with annotations by R. K. Guy and N. J. A. Sloane]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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