id:A075359 - OEIS Search Results

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Sum of the digits of the next n numbers.

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1, 5, 15, 25, 20, 39, 49, 53, 72, 91, 113, 141, 160, 137, 102, 121, 161, 207, 253, 203, 168, 223, 290, 354, 202, 287, 369, 388, 293, 393, 502, 362, 444, 571, 440, 531, 649, 509, 672, 655, 659, 813, 670, 881, 441, 505, 473, 537, 556, 605, 633, 697, 692, 801 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n) = A037123(n(n+1)/2)-A037123(n(n-1)/2). - David Wasserman (dwasserm(AT)earthlink.net), Jan 16 2005`
	EXAMPLE	`a(5) = digit sum of 11,12,13,14 and 15 = 20.`
	CROSSREFS	`Cf. A037123.` `Sequence in context: A029480 A029504 A066548 this_sequence A075336 A031236 A011535` `Adjacent sequences: A075356 A075357 A075358 this_sequence A075360 A075361 A075362`
	KEYWORD	`nonn,base`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 19 2002`
	EXTENSIONS	`More terms from David Wasserman (dwasserm(AT)earthlink.net), Jan 16 2005`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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