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This sequence was mentioned in an article, so the A-number has not been recycled.
Table of n, a(n) for n=1..34.
David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, arXiv:1004.3036 [math.CO], 2010.
Sequence in context: A125913 A122386 A051464 * A060632 A160407 A007457
Adjacent sequences: A151562 A151563 A151564 * A151566 A151567 A151568