login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A103416 a(n) = n - ceiling(sqrt(prime(n))). 1
-1, 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 5, 6, 7, 8, 8, 9, 10, 10, 11, 12, 13, 13, 14, 15, 15, 16, 17, 18, 19, 19, 20, 21, 22, 22, 23, 24, 25, 26, 26, 27, 28, 29, 30, 30, 31, 32, 33, 33, 34, 35, 36, 37, 38, 38, 39, 40, 41, 42, 43, 44, 44, 45, 46, 47, 48, 48, 49, 50, 51, 52, 53, 53, 54, 55 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Table of n, a(n) for n=0..74.

MATHEMATICA

Table[n - Ceiling[ Sqrt[ Prime[ n]]], {n, 75}] (* Robert G. Wilson v, Mar 24 2005 *)

CROSSREFS

Sequence in context: A257808 A249036 A096607 * A029091 A175858 A272613

Adjacent sequences:  A103413 A103414 A103415 * A103417 A103418 A103419

KEYWORD

sign

AUTHOR

Giovanni Teofilatto, Mar 21 2005

EXTENSIONS

More terms from Robert G. Wilson v, Mar 24 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 21 04:17 EST 2021. Contains 340332 sequences. (Running on oeis4.)