login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A114460 Integer part of sqrt(n)+sqrt(n+1)+sqrt(n+2)+sqrt(n+3)+sqrt(n+4). 3
8, 9, 11, 12, 13, 14, 14, 15, 16, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, 28, 28, 29, 29, 29, 30, 30, 31, 31, 32, 32, 32, 33, 33, 33, 34, 34, 34, 35, 35, 36, 36, 36, 37, 37, 37, 38, 38, 38, 39, 39, 39, 39, 40, 40, 40, 41, 41, 41, 42, 42 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
X. Zhan, Formulae for sums of consecutive square roots, The Math. Intelligencer, 27, No. 4, 2005, 4-5.
FORMULA
a(n) = floor(sqrt(25n+49)).
MAPLE
seq(floor(sqrt(25*n+49)), n=1..90);
MATHEMATICA
Table[Floor[Sqrt[25 n + 49]], {n, 80}] (* Vincenzo Librandi, Jun 28 2015 *)
Floor[Total/@Partition[Sqrt[Range[80]], 5, 1]] (* Harvey P. Dale, Nov 08 2020 *)
PROG
(PARI) vector(80, n, sqrtint(25*n+49)) \\ Michel Marcus, Jun 27 2015
(Magma) [Floor(Sqrt(25*n+49)): n in [1..80]]; // Vincenzo Librandi, Jun 28 2015
CROSSREFS
Sequence in context: A048000 A048081 A109936 * A120201 A188056 A128234
KEYWORD
nonn
AUTHOR
Emeric Deutsch, Nov 28 2005
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 2 17:33 EST 2024. Contains 370498 sequences. (Running on oeis4.)