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!)
A115666 Semiprimes (A001358) whose digit reversal is a brilliant number (A078972). 1
4, 6, 9, 51, 94, 121, 122, 143, 155, 158, 169, 178, 187, 319, 323, 329, 335, 341, 394, 398, 718, 734, 737, 766, 767, 781, 913, 926, 949, 955, 961, 979, 982, 985, 989, 998, 1141, 1202, 1211, 1273, 1322, 1343, 1405, 1415, 1655, 1691, 1703, 1714, 1807 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

EXAMPLE

155=5*31 is semiprime and 551=19*29 is brilliant.

CROSSREFS

Cf. A001358, A078972, A115665.

Sequence in context: A107342 A086698 A317248 * A245044 A104389 A115655

Adjacent sequences:  A115663 A115664 A115665 * A115667 A115668 A115669

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Jan 31 2006

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 August 14 09:14 EDT 2020. Contains 336480 sequences. (Running on oeis4.)