id:A127830 - OEIS Search Results

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a(n)=sum{k=0..n, mod(C(floor(k/2),n-k),2)}.

+0
2

1, 1, 1, 2, 2, 1, 2, 3, 3, 3, 2, 2, 3, 2, 3, 5, 5, 4, 4, 5, 4, 3, 3, 3, 4, 4, 3, 4, 5, 3, 5, 8, 8, 7, 6, 7, 7, 5, 6, 8, 7, 6, 5, 5, 5, 4, 4, 5, 6, 5, 5, 7, 6, 4, 5, 6, 7, 7, 5, 6, 8, 5, 8, 13, 13, 11, 10, 12, 11, 8, 9, 11, 11, 10, 8, 9, 10, 7, 9, 13, 12 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`Row sums of number triangle A127829.`
	FORMULA	`a(2^n)=F(n); a(2^(n+1)+1)=L(n); a(n) mod 2=A000931(n+5) mod 2=A011656(n+4);`
	CROSSREFS	`Sequence in context: A131730 A029335 A029257 this_sequence A053284 A050371 A022871` `Adjacent sequences: A127827 A127828 A127829 this_sequence A127831 A127832 A127833`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Feb 01 2007`

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Last modified September 6 00:03 EDT 2008. Contains 143485 sequences.

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