OFFSET
1,1
LINKS
Antti Karttunen, Table of n, a(n) for n = 1..10000
FORMULA
MATHEMATICA
Table[DivisorSigma[0, (n + 1)^2] - DivisorSigma[0, n^2], {n, 100}] (* Indranil Ghosh, Apr 15 2017 *)
Differences[DivisorSigma[0, Range[100]^2]] (* Harvey P. Dale, Jul 21 2023 *)
PROG
CROSSREFS
KEYWORD
sign
AUTHOR
Antti Karttunen, Apr 15 2017
STATUS
approved