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!)
A032622 Numbers n such that n concatenated with n + 7 is a prime. 1
2, 6, 20, 26, 30, 36, 44, 60, 62, 66, 74, 80, 86, 1004, 1034, 1046, 1086, 1094, 1104, 1136, 1142, 1194, 1200, 1206, 1214, 1224, 1250, 1262, 1266, 1290, 1292, 1296, 1320, 1326, 1332, 1346, 1350, 1352, 1356, 1364, 1370, 1380, 1404, 1416, 1434, 1472, 1496 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

CROSSREFS

Cf. A032612.

Sequence in context: A028689 A156269 A128447 * A104749 A062281 A267124

Adjacent sequences:  A032619 A032620 A032621 * A032623 A032624 A032625

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

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 May 31 02:51 EDT 2020. Contains 334747 sequences. (Running on oeis4.)