



2, 3, 7, 3, 9, 9, 23, 3, 9, 9, 27, 9, 27, 27, 73, 3, 9, 9, 27, 9, 27, 27, 81, 9, 27, 27, 81, 27, 81, 81, 227, 3, 9, 9, 27, 9, 27, 27, 81, 9, 27, 27, 81, 27, 81, 81, 243, 9, 27, 27, 81, 27, 81, 81, 243, 27, 81, 81, 243, 81, 243, 243, 697, 3, 9, 9, 27, 9
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..68.
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS


FORMULA

a(n) = A048883(n), except a(n) = A048883(n)  (n+1)/2 if n is a power of 2 minus 1.  Omar E. Pol, Jan 06 2014


EXAMPLE

From Omar E. Pol, Jan 01 2014: (Start)
Written as an irregular triangle in which row lengths is A000079 the sequence begins:
2;
3,7;
3,9,9,23;
3,9,9,27,9,27,27,73;
3,9,9,27,9,27,27,81,9,27,27,81,27,81,81,227;
3,9,9,27,9,27,27,81,9,27,27,81,27,81,81,243,9,27,27,81,27, 81,81,243,27,81,81,243,81,243,243,697;
(End)


CROSSREFS

Cf. A152978, A153000, A160414, A161415.
Sequence in context: A110057 A226985 A174407 * A187152 A086508 A085641
Adjacent sequences: A160724 A160725 A160726 * A160728 A160729 A160730


KEYWORD

nonn,tabf


AUTHOR

Omar E. Pol, Jun 13 2009


EXTENSIONS

a(11)a(58) from M. F. Hasler, Dec 03 2012
a(59)a(68) from Omar E. Pol, Jan 06 2014


STATUS

approved



