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A194445
Number of toothpicks or D-toothpicks added at n-th stage to the structure of A194444.
9
0, 1, 2, 4, 4, 4, 8, 11, 8, 4, 8, 16, 24, 12, 20, 25, 16, 4, 8, 16, 24, 28, 36, 42, 44, 20, 24, 40, 64, 32, 44, 53, 32, 4, 8, 16, 24, 28, 36, 44, 52, 42, 48, 60, 100, 68, 84, 83, 84, 28, 24, 44, 72, 84, 104, 116, 132, 54, 56, 92, 144, 72, 92, 109, 64, 4
OFFSET
0,3
COMMENTS
Essentially the first differences of A194444.
First differs from A220525 at a(13). - Omar E. Pol, Mar 23 2013
FORMULA
It appears that a(2^k+1) = 4, if k >= 1.
a(n) = A194435(n)/4. - Omar E. Pol, Mar 23 2013
EXAMPLE
Contribution from Omar E. Pol, Dec 05 2012 (Start):
Triangle begins:
0;
1;
2;
4,4;
4,8,11,8;
4,8,16,24,12,20,25,16;
4,8,16,24,28,36,42,44,20,24,40,64,32,44,53,32;
(End)
CROSSREFS
Row lengths give 1 together with A011782. Right border gives 0 together with A000079.
Sequence in context: A327331 A231349 A170893 * A220525 A160809 A139251
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Aug 24 2011
EXTENSIONS
More terms from Omar E. Pol, Mar 23 2013
STATUS
approved