Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A120134
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A120134 a(1)=4; a(n)=floor((8+sum(a(1) to a(n-1)))/2). +0
1
4, 6, 9, 13, 20, 30, 45, 67, 101, 151, 227, 340, 510, 765, 1148, 1722, 2583, 3874, 5811, 8717, 13075, 19613, 29419, 44129, 66193, 99290, 148935, 223402, 335103, 502655, 753982, 1130973, 1696460, 2544690, 3817035, 5725552, 8588328, 12882492 (list; graph; listen)
OFFSET

1,1

MATHEMATICA

f[s_] := Append[s, Floor[(8 + Plus @@ s)/2]]; Nest[f, {4}, 37] (from Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 10 2006)

CROSSREFS

Cf. A073941, A112088, A072493, A120134 - A120209.

Sequence in context: A020747 A010737 A048625 this_sequence A112381 A108634 A135355

Adjacent sequences: A120131 A120132 A120133 this_sequence A120135 A120136 A120137

KEYWORD

nonn

AUTHOR

Graeme McRae (g_m(AT)mcraefamily.com), Jun 10 2006

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 11 12:57 EST 2009. Contains 170656 sequences.


AT&T Labs Research