Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A047345
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A047345 Numbers that are congruent to {0, 4} mod 7. +0
2
0, 4, 7, 11, 14, 18, 21, 25, 28, 32, 35, 39, 42, 46, 49, 53, 56, 60, 63, 67, 70, 74, 77, 81, 84, 88, 91, 95, 98, 102, 105, 109, 112, 116, 119, 123, 126, 130, 133, 137, 140, 144, 147, 151, 154, 158, 161, 165, 168, 172, 175, 179, 182, 186, 189, 193 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n) = ceiling(7*n/2).

a(n)=7*n-a(n-1)-10 (with a(1)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 23 2009]

EXAMPLE

For n=2, a(2)=7*2-0-10=4; n=3, a(3)=7*3-4-10=7; n=4, a(4)=7*4-7-10=11 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 23 2009]

CROSSREFS

Cf. A030123.

Sequence in context: A078309 A028373 A083051 this_sequence A087070 A161886 A003670

Adjacent sequences: A047342 A047343 A047344 this_sequence A047346 A047347 A047348

KEYWORD

nonn,new

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


AT&T Labs Research