id:A056398 - OEIS Search Results

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Number of step shifted (decimated) sequence structures using exactly four different symbols.

+0
1

0, 0, 0, 1, 3, 37, 63, 479, 1316, 8597, 14619, 155999, 211231, 1732907, 5302823, 21559909, 43398413, 466495335, 625545865, 5659500031, 15126813765, 72778025365, 132561145173, 1460519554091, 2338565021382 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`See A056371 for an explanation of step shifts. Permuting the symbols will not change the structure.`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`A056393(n)-A056392(n).`
	CROSSREFS	`Cf. A056378.` `Sequence in context: A091824 A139842 A056408 this_sequence A092074 A107183 A031919` `Adjacent sequences: A056395 A056396 A056397 this_sequence A056399 A056400 A056401`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research