A098786 - OEIS

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A098786

Weight distribution of [90,45,18] binary extended quadratic-residue (or QR) code.

1, 0, 0, 0, 0, 0, 0, 0, 0, 274120, 2819520, 30530115, 249109665, 1650476520, 8806726665, 38261417997, 136522171665, 402352364565, 983530112015, 2001805012350, 3403264592178, 4842229755990, 5773480681050 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,10`
	COMMENTS	`Taken from the Tjhai-Tomlinson web site.`
	LINKS	`Table of n, a(n) for n=0..22.` `C. J. Tjhai and Martin Tomlinson, Weight Distributions of Quadratic Residue and Quadratic Double Circulant Codes over GF(2)`
	EXAMPLE	`The weight distribution is:` `i A_i` `0 1` `18 274120` `20 2819520` `22 30530115` `24 249109665` `26 1650476520` `28 8806726665` `30 38261417997` `32 136522171665` `34 402352364565` `36 983530112015` `38 2001805012350` `40 3403264592178` `42 4842229755990` `44 5773480681050` `46 5773480681050` `48 4842229755990` `50 3403264592178` `52 2001805012350` `54 983530112015` `56 402352364565` `58 136522171665` `60 38261417997` `62 8806726665` `64 1650476520` `66 249109665` `68 30530115` `70 2819520` `72 274120` `90 1`
	CROSSREFS	`Sequence in context: A114663 A151650 A128479 * A235300 A256364 A250509` `Adjacent sequences: A098783 A098784 A098785 * A098787 A098788 A098789`
	KEYWORD	`nonn,fini`
	AUTHOR	`N. J. A. Sloane, Mar 30 2009`
	STATUS	`approved`

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Last modified March 31 22:16 EDT 2020. Contains 333151 sequences. (Running on oeis4.)