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 A229942 Number of exposed toothpick endpoints in the n-th row of the toothpick structure of A229940 (also A229950). 6
 0, 1, 2, 2, 2, 2, 2, 3, 3, 2, 3, 4, 3, 2, 3, 4, 3, 3, 4, 4, 3, 2, 4, 6, 4, 2, 3, 4, 4, 4, 4, 5, 4, 2, 4, 6, 4, 2, 4, 6, 5, 4, 4, 4, 3, 2, 5, 8, 5, 3, 4, 4, 4, 4, 5, 6, 4, 2, 5, 8, 5, 2, 4, 6, 5, 4, 4, 4, 4, 4, 6, 9, 6, 2, 3, 4, 4, 4, 6, 8, 5, 2, 5, 8, 5, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS The second bisection gives A000005. For more information see A229940. LINKS Omar E. Pol, Illustration of initial terms of the divisor function (A000005), see the third picture. N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS EXAMPLE Illustration of initial terms: --------------------------------------------------- A229940           Diagram      n   a(n)    A000005 --------------------------------------------------- .                              1    0 .                              2    1         1 1;                 |           3    2 0;                             4    2         2 1;                 |           5    2 0;                             6    2         2 1;                 |           7    2 0;                             8    3         3 1, 1;              | |         9    3 0, 1;                |        10    2         2 1, 1;              | |        11    3 0, 0;                         12    4         4 1, 1;              | |        13    3 0, 1;                |        14    2         2 1, 1;              | |        15    3 0, 0;                         16    4         4 1, 1;              | |        17    3 0, 1;                |        18    3         3 1, 1, 1;           | | |      19    4 0, 0, 1;               |      20    4         4 1, 1, 1;           | | |      21    3 0, 1, 1;             | |      22    2         2 1, 1, 1;           | | |      23    4 0, 0, 0;                      24    6         6 1, 1, 1;           | | |      25    4 0, 1, 1;             | |      26    2         2 1, 1, 1;           | | |      27    3 0, 0, 1;               |      28    4         4 1, 1, 1;           | | |      29    4 0, 1, 0;             |        30    4         4 1, 1, 1;           | | |      31    4 0, 0, 1;               |      32    5         5 1, 1, 1, 1;        | | | | --------------------------------------------------- CROSSREFS Cf. A000005, A139250, A139251, A229940, A229950, A229951. Sequence in context: A234287 A084294 A067752 * A025422 A078640 A006374 Adjacent sequences:  A229939 A229940 A229941 * A229943 A229944 A229945 KEYWORD nonn AUTHOR Omar E. Pol, Oct 04 2013 STATUS approved

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Last modified January 27 04:57 EST 2020. Contains 331291 sequences. (Running on oeis4.)