id:A129230 - OEIS Search Results

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a(n)=Floor(n*r)+Floor((n-2)*r)+Floor((n-4)*r)+...+Floor(k*r), where r = golden mean = (1 + sqrt(5))/2 and k=0 if n is even, k=1 if n is odd.

+0
2

0, 1, 3, 5, 9, 13, 18, 24, 30, 38, 46, 55, 65, 76, 87, 100, 112, 127, 141, 157, 173, 190, 208, 227, 246, 267, 288, 310, 333, 356, 381, 406, 432, 459, 487, 515, 545, 574, 606, 637, 670, 703, 737, 772, 808, 844, 882, 920, 959, 999, 1039, 1081, 1123, 1166, 1210 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n) = sum(A129229(k): k=0,1,...,n).`
	CROSSREFS	`Cf. A129229.` `Sequence in context: A036713 A122248 A024403 this_sequence A071404 A074133 A078735` `Adjacent sequences: A129227 A129228 A129229 this_sequence A129231 A129232 A129233`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu), Apr 04 2007`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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