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A105826 a(n) = sigma(n) (mod 7). 6
1, 3, 4, 0, 6, 5, 1, 1, 6, 4, 5, 0, 0, 3, 3, 3, 4, 4, 6, 0, 4, 1, 3, 4, 3, 0, 5, 0, 2, 2, 4, 0, 6, 5, 6, 0, 3, 4, 0, 6, 0, 5, 2, 0, 1, 2, 6, 5, 1, 2, 2, 0, 5, 1, 2, 1, 3, 6, 4, 0, 6, 5, 6, 1, 0, 4, 5, 0, 5, 4, 2, 6, 4, 2, 5, 0, 5, 0, 3, 4, 2, 0, 0, 0, 3, 6, 1, 5, 6, 3, 0, 0, 2, 4, 1, 0, 0, 3, 2, 0, 4, 6, 6, 0, 3 (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

MAPLE

A105826:= n-> (numtheory[sigma](n) mod 7):

seq (A105826(n), n=1..105); # Jani Melik, Jan 26 2011

PROG

(PARI) a(n)=sigma(n)%7

CROSSREFS

Cf. A000203.

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).

Sequence in context: A158677 A337164 A105576 * A110665 A063441 A319600

Adjacent sequences:  A105823 A105824 A105825 * A105827 A105828 A105829

KEYWORD

easy,nonn

AUTHOR

Shyam Sunder Gupta, May 05 2005

STATUS

approved

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Last modified April 20 09:21 EDT 2021. Contains 343125 sequences. (Running on oeis4.)