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A053215 Sum of divisors of those numbers n such that n and n+1 have the same sum of divisors. 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; refs; listen; history; internal format)
OFFSET

1,1

LINKS

T. D. Noe, Table of n, a(n) for n=1..4804

FORMULA

a(n) = sigma(A002961(n))

CROSSREFS

Cf. A000203, A002961, A053249.

Sequence in context: A125436 A096821 A168303 * A004413 A069779 A199301

Adjacent sequences:  A053212 A053213 A053214 * A053216 A053217 A053218

KEYWORD

nonn

AUTHOR

Asher Auel (asher.auel(AT)reed.edu) Jan 11, 2000

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.