A082391 Start with the sequence a(1 to 4) = "1,3,2,3". Then in step s, append "1", "1,2", or "1,2,3", whichever ends with a(s+2).

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

Offset

1,2

Comments

a(n)=3 just if n=(k^3+3*k^2-4*k+12)/6.

Links

Table of n, a(n) for n=1..102.

Crossrefs

Sequence in context: A341847 A200223 A236228 * A283977 A248579 A296992

Adjacent sequences: A082388 A082389 A082390 * A082392 A082393 A082394

Keyword

nonn

Author

Benoit Cloitre, Apr 14 2003

Extensions

Edited by Don Reble, Nov 02 2005

Status

approved