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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A046490 Palindromes expressible as the sum of 2 consecutive palindromic primes. 1
5, 8, 232, 282, 666, 20802, 21912, 22722, 23832, 60306, 60606, 61816, 62526, 63836, 64746, 65956, 69896, 2078702, 2098902, 2237322, 2243422, 2249422, 2279722, 2295922, 2397932, 2409042, 2427242, 2439342, 2456542, 2477742, 2485842 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..31.

P. De Geest, World!Of Palindromic Primes

EXAMPLE

E.g. 666 = 313 + 353; 60606 = 30203 + 30403.

MATHEMATICA

palQ[n_] := Reverse[x = IntegerDigits[n]] == x; t = Select[Prime[Range[96000]], palQ]; Select[Total /@ Partition[t, 2, 1], palQ] (* Jayanta Basu, Jun 26 2013 *)

CROSSREFS

Cf. A002113, A002385, A046491.

Sequence in context: A151827 A258044 A162571 * A155214 A028934 A297559

Adjacent sequences:  A046487 A046488 A046489 * A046491 A046492 A046493

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Sep 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified July 17 01:41 EDT 2018. Contains 312693 sequences. (Running on oeis4.)