A156352 a(n)=A078649(A054353(n)-n+1)-A054353(n)

1, 1, 3, 2, 1, 2, 1, 1, 2, 1, 1, 3, 2, 1, 3, 2, 1, 1, 2, 1, 3, 2, 1, 2, 1, 1, 3, 2, 1, 3, 2, 1, 2, 1, 1, 2, 1, 1, 3, 2, 1, 2, 1, 1, 2, 1, 3, 2, 1, 3, 2, 1, 1, 2, 1, 1, 3, 2, 1, 2, 1, 1, 2, 1, 1, 3, 2, 1, 3, 2, 1, 2, 1, 1, 2, 1, 3, 2, 1, 1, 2, 1, 1, 3, 2, 1, 2, 1, 1, 2, 1, 1, 3, 2, 1, 3, 2, 1, 1, 2, 1, 3, 2, 1, 2

Offset

1,3

Links

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

Formula

a(n)=3 iff {A000002(n),A000002(n+1),A000002(n+2)}={2,1,1}

Crossrefs

Sequence in context: A016457 A181715 A077089 * A175191 A328928 A370560

Adjacent sequences: A156349 A156350 A156351 * A156353 A156354 A156355

Keyword

nonn

Author

Benoit Cloitre, Feb 08 2009

Status

approved