gaps in sigma()

[Jud McCranie]

At 06:13 PM 8/8/2005, Max wrote:
>Let a=a(n) be the minimum positive integer such that [a,a+n-1] does not 
>contain any values of sigma(k) (i.e., sum of all positive divisors of k).
>According to http://www.mathlinks.ro/Forum/viewtopic.php?t=26906 the 
>initial terms of a(n) are
>2, 9, 49, 423, 1333
>
>Would anybody like to extend and/or submit this sequence to OEIS?

I'll try it.