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 A084301 a(n) = sigma(n) mod 6. 25
 1, 3, 4, 1, 0, 0, 2, 3, 1, 0, 0, 4, 2, 0, 0, 1, 0, 3, 2, 0, 2, 0, 0, 0, 1, 0, 4, 2, 0, 0, 2, 3, 0, 0, 0, 1, 2, 0, 2, 0, 0, 0, 2, 0, 0, 0, 0, 4, 3, 3, 0, 2, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 2, 1, 0, 0, 2, 0, 0, 0, 0, 3, 2, 0, 4, 2, 0, 0, 2, 0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 0, 4, 0, 2, 0, 0, 0, 2, 3, 0, 1, 0, 0, 2, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Antti Karttunen, Table of n, a(n) for n = 1..16384 Index entries for sequences related to sums of divisors FORMULA a(n) = A010875(A000203(n)). - Antti Karttunen, Nov 07 2017 MAPLE A084301:= n-> (numtheory[sigma](n) mod 6): seq (A084301(n), n=1..105); # Jani Melik, Jan 26 2011 MATHEMATICA Table[Mod[DivisorSigma[1, n], 6], {n, 120}] (* Harvey P. Dale, Apr 07 2011 *) PROG (PARI) a(n)=sigma(n)%6 \\ Charles R Greathouse IV, Mar 09 2014 CROSSREFS Cf. A000203, A010875, A054763, A084299, A084300. Sequences sigma(n) mod k: A053866 (k=2), A074941 (k=3), A105824 (k=4), A105825 (k=5), A084301 (k=6), A105826 (k=7), A105827 (k=8). Cf. A074627 (locations of 0), A074628 (locations of 2), A067051 (locations of 3), A074630 (locations of 4), A074384 (locations of 5). Sequence in context: A171657 A287696 A366465 * A195788 A201930 A176979 Adjacent sequences: A084298 A084299 A084300 * A084302 A084303 A084304 KEYWORD easy,nonn AUTHOR Labos Elemer, Jun 02 2003 STATUS approved

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Last modified May 27 17:52 EDT 2024. Contains 372880 sequences. (Running on oeis4.)