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A185126 A spider's web: Chronological order of 27 rays in a triangle. 0
1, 13, 20, 24, 16, 7, 26, 14, 3, 9, 22, 18, 5, 11, 21, 15, 2, 12, 27, 23, 10, 4, 19, 6, 17, 8, 25 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
A permutation of the first 27 natural numbers.
The first side is created just after the third ray (numbered 20). It is named I (from the third to the first ray).
The second side is created just after the fourth ray (numbered 24). It is named II (from the third to the second ray (numbered 13)).
The third side is created just after the fifth ray (numbered 16). It is named III (from the second to the first ray (numbered 1)).
Chronological distribution:
I 4 7 11 15 19 20 27
II 5 8 12 16 23 25
III 6 9 10 13 14 17 18 21 22 24 26
Final distribution:
1,17,9,22,13,24,6,26,10,21,14,18,2,8,16,5,25,12,23,3,15,11,20,4,27,7,19.
LINKS
CROSSREFS
Sequence in context: A176150 A095040 A069195 * A366959 A098956 A302390
KEYWORD
nonn,fini,full
AUTHOR
Paul Curtz, Jan 20 2012
STATUS
approved

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Last modified March 29 09:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)