A157512 - OEIS

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A157512

Partial sums of A157502

2, 8, 16, 26, 38, 52, 70, 90, 112 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`Set R=FLOOR(A(157502)/2), S=FLOOR(SQRT(A(157502))/2), then a(n)=R(R+1)-(4S^3+6S^2+2S)/3`
	EXAMPLE	`a(4)=2+6+8+10=26`
	CROSSREFS	`Sequence in context: A175819 A125259 A169925 * A137882 A194643 A136514` `Adjacent sequences: A157509 A157510 A157511 * A157513 A157514 A157515`
	KEYWORD	`nonn`
	AUTHOR	`Gerald Hillier (adr.rabbicat(AT)gmail.com), Mar 02 2009`

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Last modified February 14 18:09 EST 2012. Contains 205663 sequences.