id:A053215 - OEIS Search Results

Search: id:A053215

Displaying 1-1 of 1 results found.

page 1

Sum of divisors of those numbers n such that n and n+1 have the same sum of divisors.

+0
3

24, 312, 1440, 2160, 2688, 2640, 4320, 4464, 7644, 22932, 28314, 29040, 34560, 37440, 51840, 56160, 65280, 100800, 115200, 114912, 120960, 120960, 138240, 153216, 194400, 168960, 178560, 186048, 207360, 221184, 244800, 280800, 276480 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1378`
	FORMULA	`a(n) = sigma(A002961(n))`
	CROSSREFS	`Cf. A000203, A002961, A053249.` `Sequence in context: A000552 A125436 A096821 this_sequence A004413 A069779 A006922` `Adjacent sequences: A053212 A053213 A053214 this_sequence A053216 A053217 A053218`
	KEYWORD	`nonn`
	AUTHOR	`Asher Auel (asher.auel(AT)reed.edu) Jan 11, 2000`

page 1

Search completed in 0.002 seconds

Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research