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!)
A156118 The only primes in single-prime centuries. 0
155921, 268343, 413353, 1004873, 1140091, 1272749, 1280023, 1357201, 1422367, 1444309, 1451423, 1468079, 1491377, 1553653, 1561919, 1653853, 1655707, 1733449, 1904311, 2045213, 2046553, 2052217, 2116291, 2166319, 2244091 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..25.

FORMULA

A prime p is in the sequence iff it is the only prime in range (100*Floor(p/100),100*Ceiling(p/100)).

MATHEMATICA

Prime[Last[#]]&/@Select[Partition[PrimePi[100Range[30000]], 2, 1], Last[#]- First[#]==1&] (* Harvey P. Dale, Nov 06 2011 *)

CROSSREFS

Sequence in context: A050520 A049443 A228473 * A171658 A347936 A347939

Adjacent sequences:  A156115 A156116 A156117 * A156119 A156120 A156121

KEYWORD

nonn,base

AUTHOR

Ki Punches, Feb 15 2009

EXTENSIONS

Edited and extended by Ray Chandler, Feb 20 2009

Definition corrected by Ki Punches, Feb 24 2009

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 October 3 15:08 EDT 2022. Contains 357237 sequences. (Running on oeis4.)