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A152768
Records in A139251.
3
1, 2, 4, 8, 12, 16, 28, 32, 36, 40, 60, 88, 92, 112, 140, 208, 256, 260, 296, 364, 488, 672, 704, 708, 744, 956, 1216, 1648, 2048, 2052, 2096, 2108, 2396, 3128, 4080, 5344, 5952, 5956, 6000, 6300, 7920, 10336, 13504, 16640, 16644, 16688, 16696, 16988, 17100, 18612, 20040
OFFSET
1,2
COMMENTS
Excluding the initial 1 and 2, this sequence also gives the records in A147646. - Nathaniel Johnston, Apr 10 2011
LINKS
David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata, Congressus Numerantium, Vol. 206 (2010), 157-191. [There is a typo in Theorem 6: (13) should read u(n) = 4.3^(wt(n-1)-1) for n >= 2.]
CROSSREFS
Cf. A139251, A139252, A139560. Toothpick sequence: A139250.
Cf. A052184.
Sequence in context: A360641 A326807 A052184 * A266047 A375599 A324214
KEYWORD
nonn
AUTHOR
Omar E. Pol, Dec 15 2008, Dec 20 2008
EXTENSIONS
a(18) - a(51) from Nathaniel Johnston, Apr 10 2011
STATUS
approved