login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A120439 Average of twin-prime pairs modulo 5. 0
-1, 1, 2, -2, 0, 2, 0, 2, 2, -2, -2, 0, 0, 2, -2, -2, 0, 0, 2, 2, -2, 0, 2, 2, 2, 0, 0, -2, 2, 0, 0, 2, -2, -2, 2, 0, 2, 0, 2, 2, 2, 0, -2, 0, 2, 0, -2, 2, 2, -2, -2, 0, -2, -2, 2, -2, 2, -2, 2, 0, -2, -2, 2, -2, 2, 0, 2, -2, -2, 0, 0, 2, 0, 2, -2, -2, 2, 0, 0, 2, 0, 0, 0, -2, 2, -2, 0, 0, 0, 2, 0, 2, -2, -2, 0, -2, 2, 2, -2, 2, 2, -2, 0, 2, 0, 0, 2, -2, -2, -2, 0 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

EXAMPLE

First twin-prime average = 4 (=-1+1*5): a(1) = -1.

Second twin-prime average = 6 (=1+1*5): a(2) = +1.

Third twin-prime average = 12 (=2+2*5): a(3) = +2.

CROSSREFS

Cf. A014574.

Sequence in context: A050314 A122157 A080378 * A104624 A193863 A049850

Adjacent sequences:  A120436 A120437 A120438 * A120440 A120441 A120442

KEYWORD

sign

AUTHOR

Greg Huber (huber(AT)alum.mit.edu), Jul 18 2006

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 19:13 EST 2012. Contains 206085 sequences.