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A255264
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Total number of ON cells in the "Ulam-Warburton" two-dimensional cellular automaton of A147562 after A048645(n) generations.
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3
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1, 5, 9, 21, 25, 37, 85, 89, 101, 149, 341, 345, 357, 405, 597, 1365, 1369, 1381, 1429, 1621, 2389, 5461, 5465, 5477, 5525, 5717, 6485, 9557, 21845, 21849, 21861, 21909, 22101, 22869, 25941, 38229, 87381, 87385, 87397, 87445, 87637
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listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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LINKS
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FORMULA
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EXAMPLE
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Also, written as an irregular triangle in which row lengths are the terms of A028310 the sequence begins:
1;
5;
9, 21;
25, 37, 85;
89, 101, 149, 341;
345, 357, 405, 597, 1365;
1369, 1381, 1429, 1621, 2389, 5461;
5465, 5477, 5525, 5717, 6485, 9557, 21845;
21849, 21861, 21909, 22101, 22869, 25941, 38229, 87381;
...
Right border gives the positive terms of A002450.
It appears that the second leading diagonal gives the odd terms of A206374.
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CROSSREFS
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Cf. A002450, A028310, A032925, A048645, A075897, A139250, A147562, A162795, A169707, A206374, A209492, A255263, A255366, A256250, A256260.
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KEYWORD
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AUTHOR
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STATUS
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approved
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