id:A120739 - OEIS Search Results

Search: id:A120739

Displaying 1-1 of 1 results found.

page 1

A120739

Sum{k=0..n, floor(C(n,k)/2)}.

+0
2

0, 0, 1, 2, 7, 14, 30, 60, 127, 254, 510, 1020, 2046, 4092, 8188, 16376, 32767, 65534, 131070, 262140, 524286, 1048572, 2097148, 4194296, 8388606, 16777212, 33554428, 67108856, 134217724, 268435448, 536870904, 1073741808, 2147483647 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`Nonzero terms = row sums of triangle A166454 [From Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 14 2009]`
	FORMULA	`a(n)=(2^n-A001316(n))/2.`
	CROSSREFS	`A166454 [From Gary W. Adamson (qntmpkt(AT)yahoo.com), Oct 14 2009]` `Sequence in context: A122751 A152944 A018437 this_sequence A034791 A140253 A018453` `Adjacent sequences: A120736 A120737 A120738 this_sequence A120740 A120741 A120742`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jun 29 2006`

page 1

Search completed in 0.002 seconds

Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research