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A210604
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Bisection of Recamán's sequence A005132.
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2
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0, 3, 2, 13, 12, 11, 10, 9, 8, 43, 42, 41, 42, 43, 44, 45, 46, 113, 114, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 157, 156, 155, 154, 153, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 367, 368, 369, 370, 151, 152
(list;
graph;
refs;
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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Also length of the horizontal edges of a rectangular polyspiral path. For the vertical edges see A210605. The mentioned polyspiral path is one of the three views of a rectangular polyhelix which is a three-dimensional graphical representation of Recamán's sequence A005132.
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LINKS
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EXAMPLE
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1) Written as an irregular array in which each row lists consecutive numbers in ascending order or in descending order:
0;
3,2;
13,12,11,10,9,8;
43,42,41;
42,43,44,45,46;
113,114;
39,38,37,36,35,34,33,32,31,30,29,28,27,26;
...
2) Written as an irregular array in which each row lists consecutive numbers in ascending order, in descending order or in descending-ascending order:
0;
3,2;
13,12,11,10,9,8;
43,42,41,42,43,44,45,46;
113,114;
39,38,37,36,35,34,33,32,31,30,29,28,27,26;
...
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CROSSREFS
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KEYWORD
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nonn,tabf
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AUTHOR
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STATUS
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approved
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