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Table of n, a(n) for n=1..55.
David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS
Cf. A139250, A139251.
Sequence in context: A051555 A187891 A086407 * A215337 A090124 A097943
Adjacent sequences: A160424 A160425 A160426 * A160428 A160429 A160430
Omar E. Pol, May 25 2009
Terms after a(13) from Nathaniel Johnston, Mar 31 2011