The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A105333

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A105333

a(n) = n*(n+1)/2 mod 16.
(history; published version)

#5 by N. J. A. Sloane at Tue Oct 23 00:58:59 EDT 2012

STATUS

editing

approved

#4 by N. J. A. Sloane at Tue Oct 23 00:58:53 EDT 2012

AUTHOR

_Oscar Y. Takeshita (Takeshita.3(AT)osu.edu), _, May 01 2005

STATUS

approved

editing

#3 by Harvey P. Dale at Fri Oct 12 15:25:46 EDT 2012

STATUS

editing

approved

#2 by Harvey P. Dale at Fri Oct 12 15:25:35 EDT 2012

COMMENTS

Triangular numbers mod 16. - Harvey P. Dale, Oct 12 2012

MATHEMATICA

Mod[#, 16]&/@Accumulate[Range[0, 90]] (* Harvey P. Dale, Oct 12 2012 *)

STATUS

approved

editing

#1 by N. J. A. Sloane at Tue Jul 19 03:00:00 EDT 2005

NAME

a(n) = n*(n+1)/2 mod 16.

DATA

0, 1, 3, 6, 10, 15, 5, 12, 4, 13, 7, 2, 14, 11, 9, 8, 8, 9, 11, 14, 2, 7, 13, 4, 12, 5, 15, 10, 6, 3, 1, 0, 0, 1, 3, 6, 10, 15, 5, 12, 4, 13, 7, 2, 14, 11, 9, 8, 8, 9, 11, 14, 2, 7, 13, 4, 12, 5, 15, 10, 6, 3, 1, 0, 0, 1, 3, 6, 10, 15, 5, 12, 4, 13, 7, 2, 14, 11, 9, 8, 8, 9, 11, 14, 2, 7, 13, 4, 12

OFFSET

0,3

CROSSREFS

See A105198 for further information.

KEYWORD

nonn

AUTHOR

Oscar Y. Takeshita (Takeshita.3(AT)osu.edu), May 01 2005

STATUS

approved