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A220526 Number of toothpicks and D-toothpicks after n-th stage in the structure of the D-toothpick "medium" triangle of the third kind. 4
0, 1, 3, 7, 11, 15, 19, 26, 34, 38, 42, 50, 62, 76, 88, 103, 119, 123, 127, 135, 147, 163, 183, 207, 233 (list; graph; refs; listen; history; text; internal format)



The structure is essentially one of the horizontal wedges of A220500. First differs from A194442 (and from A220522) at a(13). A220527 (the first differences) give the number of toothpicks or D-toothpicks added at n-th stage.


Table of n, a(n) for n=0..24.

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

Index entries for sequences related to toothpick sequences


Cf. A139250, A194270, A194440, A194700, A194442, A220500, A220512, A220514, A220520, A220522, A220524, A220527.

Sequence in context: A220496 A194442 A220522 * A034934 A191151 A220494

Adjacent sequences:  A220523 A220524 A220525 * A220527 A220528 A220529




Omar E. Pol, Jan 02 2013



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Last modified December 15 12:13 EST 2019. Contains 329999 sequences. (Running on oeis4.)