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A109322 a(n) is the minimum positive integer j such that [j, j+n-1] does not contain any values of sigma(k) (i.e., sum of all positive divisors of k). 4
2, 9, 9, 49, 49, 423, 423, 423, 423, 1333, 1333, 4425, 4425, 4425, 4425, 8763, 8763, 14089, 14089, 22825, 22825, 22825, 22825, 40291, 40291, 40291, 40291, 40291, 40291, 178705, 178705, 661285, 661285, 661285, 661285, 4543141, 4543141, 4543141, 4543141, 4543141, 4543141, 4543141, 4543141, 4543141, 4543141, 4543141, 4543141 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Donovan Johnson, Table of n, a(n) for n = 1..85 (terms < 10^10)

Art of Problem Solving, Gaps in {sigma(n)}...

CROSSREFS

Cf. A109323, A109324, A110875.

Sequence in context: A168333 A238412 A242064 * A000587 A014182 A293037

Adjacent sequences:  A109319 A109320 A109321 * A109323 A109324 A109325

KEYWORD

nonn

AUTHOR

Max Alekseyev and Jud McCranie, Aug 08 2005

STATUS

approved

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Last modified November 16 21:47 EST 2018. Contains 317275 sequences. (Running on oeis4.)