id:A089350 - OEIS Search Results

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Sum of all digits in all even numbers from 0 to 8(10^(k+1)-1)/9 (with (k+1) 8's).

+0
1

0, 20, 360, 5520, 75080, 950640, 11506200 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(k+1)=4((10^k)(110*4+405k-135)-4(18k+29)+162k+216)/81`
	EXAMPLE	`a(2)=0+2+4+6+8+1+0+1+2+1+4+..+8+8=360`
	CROSSREFS	`Sequence in context: A005748 A093144 A156455 this_sequence A004292 A053508 A060918` `Adjacent sequences: A089347 A089348 A089349 this_sequence A089351 A089352 A089353`
	KEYWORD	`nonn,base`
	AUTHOR	`Yalcin Aktar (aktaryalcin(AT)msn.com), Dec 26 2003`

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