login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A089193 Odd numbers n such that 2*n-7 is a prime of the form 4*k+3. 3
5, 7, 9, 13, 15, 19, 25, 27, 33, 37, 39, 43, 45, 55, 67, 69, 73, 79, 85, 87, 93, 99, 103, 109, 115, 117, 123, 129, 135, 139, 145, 157, 159, 169, 177, 183, 187, 193, 195, 213, 219, 223, 225, 235, 237, 243, 249, 253, 255, 265, 277, 285, 289, 297 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988

Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997

LINKS

Table of n, a(n) for n=1..54.

CROSSREFS

Cf. A002145.

a(n)=A087915(n)+5

Sequence in context: A141106 A047478 A048974 * A302482 A284742 A111083

Adjacent sequences:  A089190 A089191 A089192 * A089194 A089195 A089196

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Dec 08 2003

EXTENSIONS

Offset corrected by Arkadiusz Wesolowski, Aug 09 2011

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 October 18 04:46 EDT 2019. Contains 328145 sequences. (Running on oeis4.)