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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
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OFFSET
0,3
COMMENTS
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.
LINKS
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
CROSSREFS
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
KEYWORD
nonn
,
more
AUTHOR
Omar E. Pol
, Jan 02 2013
STATUS
approved
