|
Search: id:A061465
|
|
|
| A061465 |
|
Floor(Sum_{k=1..n} sqrt(2k-1)). |
|
+0
1
|
|
| 1, 2, 4, 7, 10, 13, 17, 21, 25, 29, 34, 39, 44, 49, 54, 60, 66, 72, 78, 84, 90, 97, 104, 110, 117, 125, 132, 139, 147, 155, 162, 170, 178, 186, 195, 203, 212, 220, 229, 238, 247, 256, 265, 275, 284, 294, 303, 313, 323, 333, 343, 353, 363, 374, 384, 395, 405, 416
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
LINKS
|
Harry J. Smith, Table of n, a(n) for n=1,...,1000
|
|
EXAMPLE
|
a(3)=sqrt(1)+ sqrt(3)+ sqrt(5)= 4.968118785068667 = 4.
|
|
PROGRAM
|
(PARI) { default(realprecision, 100); for (n=1, 1000, write("b061465.txt", n, " ", floor(sum(k=1, n, sqrt(2*k - 1)))) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 23 2009]
|
|
CROSSREFS
|
Sequence in context: A127762 A003067 A130243 this_sequence A126022 A049983 A151986
Adjacent sequences: A061462 A061463 A061464 this_sequence A061466 A061467 A061468
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Jason Earls (zevi_35711(AT)yahoo.com), Jun 10 2001
|
|
EXTENSIONS
|
Corrected description and more terms from Larry Reeves (larryr(AT)acm.org), Jun 12 2001
|
|
|
Search completed in 0.002 seconds
|
