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A156915 Fixed point of: 4-->1234, 3->123, 2-->12, 1->1 0
4, 1, 2, 3, 4, 1, 1, 2, 1, 2, 3, 1, 2, 3, 4, 1, 1, 1, 2, 1, 1, 2, 1, 2, 3, 1, 1, 2, 1, 2, 3, 1, 2, 3, 4, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 2, 3, 1, 1, 1, 2, 1, 1, 2, 1, 2, 3, 1, 1, 2, 1, 2, 3, 1, 2, 3, 4, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 2, 3, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..105.

MATHEMATICA

Flatten[NestList[#/.(Thread[#->Range[#]]&[Range[4]])&, {4}, 8]] (* Peter J. C. Moses, Apr 15 2013 *)

PROG

(PARI) v=[4]; for(n=1, 200, for(i=1, v[n], v=concat(v, i)); v); a(n)=v[n];

CROSSREFS

Cf. A073645

Sequence in context: A198185 A197889 A090204 * A212497 A072046 A123609

Adjacent sequences:  A156912 A156913 A156914 * A156916 A156917 A156918

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Feb 18 2009

STATUS

approved

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Last modified November 16 02:33 EST 2018. Contains 317252 sequences. (Running on oeis4.)