

A106748


Define the morphism f: 1>113, 2>13, 3>2 and let a(0) = 1; then a(n+1) = f(a(n)).


6




OFFSET

0,2


REFERENCES

E. Bombieri and J. Taylor, Which distribution of matter diffracts? An initial investigation, in International Workshop on Aperiodic Crystals (Les Houches, 1986), J. de Physique, Colloq. C3, 47 (1986), C319 to C328.


LINKS

Table of n, a(n) for n=0..5.


MATHEMATICA

FromDigits /@ NestList[ Flatten[ # /. {1 > {1, 1, 3}, 2 > {1, 3}, 3 > 2}] &, {1}, 5] (* Robert G. Wilson v, May 17 2005 *)


CROSSREFS

Cf. A106749.
Sequence in context: A329105 A304324 A180052 * A220983 A122503 A076150
Adjacent sequences: A106745 A106746 A106747 * A106749 A106750 A106751


KEYWORD

nonn


AUTHOR

N. J. A. Sloane, May 16 2005


EXTENSIONS

More terms from Robert G. Wilson v, May 17 2005


STATUS

approved



