id:A098534 - OEIS Search Results

Search: id:A098534

Displaying 1-1 of 1 results found.

page 1

Mod 3 analogue of Stern's diatomic series.

+0
1

0, 1, 1, 2, 3, 2, 2, 4, 3, 4, 7, 5, 6, 5, 5, 4, 6, 4, 4, 8, 6, 8, 8, 7, 6, 10, 7, 8, 15, 11, 14, 10, 12, 10, 13, 11, 12, 11, 11, 10, 12, 10, 10, 11, 9, 8, 14, 10, 12, 10, 10, 8, 12, 8, 8, 16, 12, 16, 13, 14, 12, 17, 14, 16, 18, 16, 16, 17, 15, 14, 17, 13, 12, 22, 16, 20, 18, 17, 14, 22 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`Essentially diagonal sums of Pascal's triangle modulo 3.`
	FORMULA	`a(n)=sum{k=0..floor((n-1)/2), mod(binomial(n-k-1, k), 3)}`
	CROSSREFS	`Cf. A002487, A051638.` `Sequence in context: A023581 A023574 A131340 this_sequence A002307 A029247 A053269` `Adjacent sequences: A098531 A098532 A098533 this_sequence A098535 A098536 A098537`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 13 2004`

page 1

Search completed in 0.002 seconds

Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

AT&T Labs Research