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 A160418 a(n) = A160407(n+2)/2. 1
 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 2, 3, 5, 4, 1, 1, 2, 2, 2, 3, 5, 4, 2, 3, 5, 5, 6, 10, 13, 8, 1, 1, 2, 2, 2, 3, 5, 4, 2, 3, 5, 5, 6, 10, 13, 8, 2, 3, 5, 5, 6, 10, 13, 9, 6, 10, 14, 15, 21, 32, 33, 16, 1, 1, 2, 2, 2, 3, 5, 4, 2, 3, 5, 5, 6, 10, 13, 8, 2, 3, 5, 5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Row lengths are the terms of A000079 multiplied by 2. Right border gives A000079. - Omar E. Pol, Mar 19 2020 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.] N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS EXAMPLE From Omar E. Pol, Mar 19 2020: (Start) Triangle begins: 1,1; 1,1,2,2; 1,1,2,2,2,3,5,4; 1,1,2,2,2,3,5,4,2,3,5,5,6,10,13,8; 1,1,2,2,2,3,5,4,2,3,5,5,6,10,13,8,2,3,5,5,6,10,13,9,6,10,14,15,21,32,33,16; ... (end) CROSSREFS Cf. A139250, A139251, A160160, A160161, A160406, A160407, A160408, A160409. Sequence in context: A331002 A151702 A151552 * A168115 A337530 A269982 Adjacent sequences:  A160415 A160416 A160417 * A160419 A160420 A160421 KEYWORD nonn,tabf AUTHOR Omar E. Pol, May 23 2009 EXTENSIONS More terms from Jinyuan Wang, Mar 14 2020 STATUS approved

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Last modified October 24 04:47 EDT 2020. Contains 337975 sequences. (Running on oeis4.)