A220497 Number of toothpicks or D-toothpicks added at n-th stage to the structure of A220496.

0, 1, 2, 4, 4, 4, 4, 7, 8, 4, 4, 8, 8, 8, 8, 13, 16, 4, 4, 8, 8, 8, 8, 14, 16, 8, 8, 16, 16, 16, 16, 25, 32, 4, 4, 8, 8, 8, 8, 14, 16, 8, 8, 16, 16, 16, 16, 26, 32, 8, 8, 16, 16, 16, 16, 28, 32, 16, 16, 32, 32, 32, 32, 49, 64, 4, 4, 8, 8, 8, 8, 14, 16

Offset: 0

Author

Omar E. Pol, Dec 23 2012

Keywords

• nonn
• tabf

Comments

Essentially the first differences of A220496.

First differs from A194443 (and from A220523) at a(12).

Examples

			Written as an irregular triangle begins:
0;
1;
2;
4,4;
4,4,7,8;
4,4,8,8,8,8,13,16;
4,4,8,8,8,8,14,16,8,8,16,16,16,16,25,32;
4,4,8,8,8,8,14,16,8,8,16,16,16,16,26,32,8,8,16,16,16,16,28,32,16,16,32,32,32,32,49,64;
		

Links

• 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, A139251, A194271, A194443, A194700, A194701, A220495, A220496, A220523.