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A341327
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The spiral numbers not covered by any square in the square spiral tiling of A341160.
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5
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6, 19, 28, 29, 53, 54, 61, 62, 63, 86, 87, 114, 115, 116, 117, 161, 162, 163, 164, 185, 186, 187, 188, 189, 227, 228, 229, 230, 231, 232, 244, 245, 246, 247, 248, 311, 312, 313, 314, 315, 407, 408, 409, 410, 411, 412, 413, 771, 772, 773, 774, 775, 776, 777, 778, 779, 866, 867, 868, 869, 870, 871
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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See A341160 for an image of the square spiral tiling which shows the uncovered numbers in black.
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LINKS
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EXAMPLE
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a(1) = 6 and a(2) = 19 as the first, third, fourth, and seventh square of A341160 cover the numbers (1), (5,18), (7,20), (40) respectively which leaves a gap containing numbers 6 and 19 which cannot be covered by any subsequence square.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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