id:A030508 - OEIS Search Results

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Graham-Sloane-type lower bound on the size of a ternary (n,3,8) constant-weight code.

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16, 122, 549, 1837, 5069, 12203, 26510, 53141, 99840, 177811, 302759, 496128, 786545, 1211476, 1819136, 2670647, 3842461, 5429083, 7546084, 10333440, 13959209, 18623545, 24563096, 32055772, 41425920, 53049910, 67362149 (list; graph; listen)

	OFFSET	`8,1`
	LINKS	`M. Svanstrom, A lower bound for ternary constant weight codes, IEEE Trans. on Information Theory, Vol. 43, pp. 1630-1632, Sep. 1997.`
	FORMULA	`a(n) = ceil (binomial (n, w) * 2^w / (2*n + 1))`
	CROSSREFS	`Sequence in context: A104265 A068880 A053883 this_sequence A006215 A060633 A125353` `Adjacent sequences: A030505 A030506 A030507 this_sequence A030509 A030510 A030511`
	KEYWORD	`nonn`
	AUTHOR	`Mattias Svanstrom (mattias(AT)isy.liu.se)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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