A089650 - OEIS

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A089650

a(n) = A089649(n) mod 3.

1, 2, 0, 1, 0, 2, 1, 1, 1, 1, 2, 0, 1, 1, 1, 1, 0, 2, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 0, 2, 1, 1, 1, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 1, 1, 1, 0, 2, 1, 2, 0, 1, 0, 2, 1, 1, 1, 1, 2, 0, 1, 0, 2, 1, 1, 1, 1, 2, 0, 1, 0, 2, 1, 1, 1, 1, 2, 0, 1, 0, 2, 1, 1, 1, 1, 2, 0, 1, 1, 1, 1, 0, 2, 1, 2, 0, 1, 2, 0

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OFFSET

1,2

COMMENTS

Partial sums, modulo 3, of the sequence: a(1)=1, a(1), a(1), a(1), a(2), a(2), a(2), a(3), a(3), ... each term repeated 3 times.

LINKS

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

Index entries for sequences that are fixed points of mappings

FORMULA

A fixed point of the morphism 1->120, 2->102, 0->111.

MATHEMATICA

Nest[ Function[ l, {Flatten[(l /. {0 -> {1, 1, 1}, 1 -> {1, 2, 0}, 2 -> {1, 0, 2}})]}], {0}, 5] (* Robert G. Wilson v, Feb 26 2005 *)