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A212009
Number of toothpicks or D-toothpicks added at n-th stage in the toothpick structure of A212008.
3
0, 1, 4, 8, 16, 22, 20, 24, 36, 40, 32, 44, 56, 94, 60, 56, 76, 72, 32, 48, 72, 112, 132, 140, 136, 168, 112, 132, 140, 238, 148, 120, 156, 136, 32, 48, 72, 112, 132
OFFSET
0,3
COMMENTS
Essentially the first differences of A212008.
FORMULA
It appears that a(2^k + 2) = 32, if k >= 3.
EXAMPLE
When written as an irregular triangle:
0;
1;
4;
8;
16,22;
20,24,36,40;
32,44,56,94,60,56,76,72;
32,48,72,112,132,140,136,168,112,132,140,238,148,120,156,136;
32,48,72,112,132,...
KEYWORD
nonn,tabf,more
AUTHOR
Omar E. Pol, Dec 15 2012
STATUS
approved