A105827 - OEIS

More Web Proxy on the site http://driver.im/

The OEIS is supported by the many generous donors to the OEIS Foundation.

A105827

a(n) = sigma(n) (mod 8).

7

1, 3, 4, 7, 6, 4, 0, 7, 5, 2, 4, 4, 6, 0, 0, 7, 2, 7, 4, 2, 0, 4, 0, 4, 7, 2, 0, 0, 6, 0, 0, 7, 0, 6, 0, 3, 6, 4, 0, 2, 2, 0, 4, 4, 6, 0, 0, 4, 1, 5, 0, 2, 6, 0, 0, 0, 0, 2, 4, 0, 6, 0, 0, 7, 4, 0, 4, 6, 0, 0, 0, 3, 2, 2, 4, 4, 0, 0, 0, 2, 1, 6, 4, 0, 4, 4, 0, 4, 2, 2, 0, 0, 0, 0, 0, 4, 2, 3, 4, 1, 6, 0, 0, 2, 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

MAPLE

A105827:= (n-> numtheory[sigma](n) mod 8):

seq (A105827(n), n=1..105); # Jani Melik, Jan 26 2011

PROG

(PARI) a(n)=sigma(n)%8

CROSSREFS

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), A105852 (k=9), A105853 (k=10).

Sequence in context: A067342 A348987 A322656 * A230289 A367502 A023888

Adjacent sequences: A105824 A105825 A105826 * A105828 A105829 A105830

KEYWORD

easy,nonn

AUTHOR

Shyam Sunder Gupta, May 05 2005

STATUS

approved