id:A147614 - OEIS Search Results

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a(n) = number of grid points that are covered after n-th stage of A139250.

+0
8

0, 3, 7, 13, 19, 27, 39, 53, 63, 71, 83, 99, 119, 147, 183, 217, 235, 243, 255, 271, 291, 319, 355, 391, 419, 447, 487, 539, 607, 699, 803, 885, 919, 927, 939, 955, 975, 1003, 1039, 1075, 1103, 1131, 1171, 1223, 1291, 1383, 1487, 1571, 1615 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`a(n) is also the number of "ON" cells at n-th stage in simple 2-dimensional cellular automaton whose virtual skeleton is a polyedge as the toothpick sieve of A139250. [From Omar E. Pol (info(AT)polprimos.com), May 18 2009]`
	LINKS	`David Applegate, Table of n, a(n) for n = 0..10135`
	CROSSREFS	`Cf. A139250, A139251, A160420.` `Sequence in context: A117679 A100458 A000960 this_sequence A031215 A099957 A086148` `Adjacent sequences: A147611 A147612 A147613 this_sequence A147615 A147616 A147617`
	KEYWORD	`nonn`
	AUTHOR	`David Applegate (david(AT)research.att.com), Apr 29 2009`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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