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Search: id:A062504
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| A062504 |
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Triangle in which k-th row lists natural number values for the collection of riffs with k nodes. |
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+0
32
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| 1, 2, 3, 4, 5, 6, 7, 8, 9, 16, 10, 11, 12, 13, 14, 17, 18, 19, 23, 25, 27, 32, 49, 53, 64, 81, 128, 256, 512, 65536, 15, 20, 21, 22, 24, 26, 28, 29, 31, 34, 36, 37, 38, 41, 43, 46, 48, 50, 54, 59, 61, 67, 83, 97, 98, 103, 106, 121, 125, 131, 162, 169, 227, 241, 243, 289
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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k | natural numbers n such that |riff(n)| = k
0 | 1;
1 | 2;
2 | 3, 4;
3 | 5, 6, 7, 8, 9, 16;
4 | 10, 11, 12, 13, 14, 17, 18, 19, 23, 25, 27, 32, 49, 53, 64, 81, 128, 256, 512, 65536;
The natural number values for the riffs with at most 3 pts are as follows (x = root):
.................o.......o..o.......o
.................|.......^..|.......^
.................v.......|..v.......|
...........o..o..o....o..o..o..o.o..o
...........|..^..|....|..|..^..|.^..^
...........v..|..v....v..v..|..v/...|
Riff:...x;.x,.x;.x,.x.x,.x,.x,.x,...x;
Value:..2;.3,.4;.5,..6.,.7,.8,.9,..16;
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CROSSREFS
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Cf. A061396, A062860.
Sequence in context: A048406 A081433 A032581 this_sequence A102489 A004838 A032998
Adjacent sequences: A062501 A062502 A062503 this_sequence A062505 A062506 A062507
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KEYWORD
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nonn
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AUTHOR
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Jon Awbrey (jawbrey(AT)oakland.edu), Jun 23 2001
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