A162462 - OEIS

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A162462

Sum of all numbers from n to sigma(n).

1, 5, 7, 22, 11, 63, 15, 92, 55, 126, 23, 340, 27, 209, 195, 376, 35, 627, 39, 713, 318, 435, 47, 1554, 196, 578, 469, 1218, 59, 2193, 63, 1520, 648, 924, 581, 3556, 75, 1127, 855, 3315, 83, 3795, 87, 2624, 2091, 1593, 95, 6622, 477, 3146, 1353, 3525, 107, 5829, 1143 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n)= n + (n+1) +... + A000203(n) = A000217(A000203(n)) - A000217(n-1).`
	EXAMPLE	`a(1)=1=1. a(2)=5=2+3. a(3)=7=3+4. a(4)=22=4+5+6+7. a(5)=11=5+6. a(6)=63=6+7+8+9+10+11+12.`
	CROSSREFS	`Cf. A000203.` `Sequence in context: A049114 A179189 A030735 * A165144 A084164 A036498` `Adjacent sequences: A162459 A162460 A162461 * A162463 A162464 A162465`
	KEYWORD	`nonn,easy`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jul 04 2009`
	EXTENSIONS	`a(12), a(33), a(34) and others corrected by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 06 2009`

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Last modified February 15 20:03 EST 2012. Contains 205852 sequences.