OFFSET
1,4
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..16384
MATHEMATICA
Array[GCD[DivisorSigma[0, #]-1, DivisorSigma[1, #]-1]&, 120] (* Harvey P. Dale, Oct 18 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 05 2017
STATUS
approved