

A135599


Word obtained from axiom 2 using the morphism 1> 267, 2> 13467, 3> 247, 4> 23567, 5> 467, 6> 12457, 7> 123456.


1



1, 3, 4, 6, 7, 1, 2, 4, 5, 7, 1, 2, 3, 4, 5, 6, 1, 3, 4, 6, 7, 2, 3, 5, 6, 7, 1, 2, 3, 4, 5, 6, 1, 3, 4, 6, 7, 2, 4, 7, 4, 6, 7, 1, 2, 4, 5, 7, 1, 2, 3, 4, 5, 6, 2, 6, 7, 1, 3, 4, 6, 7, 2, 3, 5, 6, 7, 4, 6, 7, 1, 2, 3, 4, 5, 6, 2, 6, 7, 1, 3, 4, 6, 7, 2, 4, 7, 2, 3, 5, 6, 7, 4, 6, 7, 1, 2, 4, 5, 7, 1, 3, 4, 6, 7
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OFFSET

1,2


COMMENTS

Previous name was: Seventone substitution on a Fano projective plane graph as used in A120714 (for use in making church tone A,B,C,D,E,F,G music).
Idea inspired by a post in yahoo egroup fractals by "Dahlia Lahla" astro_girl_690(AT)yahoo.ca
In Mathematica you can transfer this to a 12tone MIDI scale as: to letters
b = a /. 1 > "a" /. 2 > "b" /. 3 > "c" /. 4 > "d" /. 5 > "e" /. 6 > "f" /. 7 > "g"
back to numbers on a 12tone scale:
c = b /. "a" > 1 /. "b" > 3 /. "c" > 4 /. "d" > 6 /. "e" > 8 /. "f" > 9 /. "g" > 11


LINKS

Roger L. Bagula, Feb 26 2008, Table of n, a(n) for n = 1..314


MATHEMATICA

s[1] = {2, 6, 7}; s[2] = {1, 3, 4, 6, 7}; s[3] = {2, 4, 7}; s[4] = {2, 3, 5, 6, 7}; s[5] = {4, 6, 7}; s[6] = {1, 2, 4, 5, 7}; s[7] = {1, 2, 3, 4, 5, 6};
t[a_] := Flatten[s /@ a];
p[0] = s[1]; p[1] = t[p[0]]; p[n_] := t[p[n  1]]; a = p[3]


CROSSREFS

Cf. A120714.
Sequence in context: A248738 A070737 A225647 * A283740 A167161 A129000
Adjacent sequences: A135596 A135597 A135598 * A135600 A135601 A135602


KEYWORD

nonn,easy,less


AUTHOR

Roger L. Bagula, Feb 26 2008


EXTENSIONS

Edited and new name from Joerg Arndt, Sep 26 2018


STATUS

approved



