A194802 Number of grid points that are covered after n-th stage of A139250, assuming the vertical toothpicks have length 4 and the horizontal toothpicks have length 2.

0, 5, 9, 23, 29, 45, 57

Offset: 0

Author

Omar E. Pol, Sep 07 2011

Keywords

• nonn
• more

Comments

There are an infinite family of these sequences since A139250 gives the number of toothpicks in the structure regardless of the length difference between horizontal toothpicks and vertical toothpicks. Examples: A147614, A194800, this sequence, A160420, etc.

Examples

			a(2) = 9.
o o o
. o .
. o .
. o .
o o o
		

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, A147614, A162795, A162796, A162797, A175098, A160420, A160422, A194800