id:A056456 - OEIS Search Results

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Palindromes using exactly five different symbols.

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0, 0, 0, 0, 0, 0, 0, 0, 120, 120, 1800, 1800, 16800, 16800, 126000, 126000, 834120, 834120, 5103000, 5103000, 29607600, 29607600, 165528000, 165528000, 901020120, 901020120, 4809004200, 4809004200, 25292030400 (list; graph; listen)

	OFFSET	`1,9`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`5! * stirling2( [(n+1)/2], 5).`
	CROSSREFS	`Cf. A056451, A001118.` `Sequence in context: A127148 A051727 A056466 this_sequence A085218 A117645 A157425` `Adjacent sequences: A056453 A056454 A056455 this_sequence A056457 A056458 A056459`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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