

A028978


Product of prime and previous prime is palindromic.


3




OFFSET

1,1


COMMENTS

No further terms < 4.5*10^8.


LINKS

Table of n, a(n) for n=1..6.
P. De Geest, More palindromic products of integer sequences


EXAMPLE

19 belongs to this sequence as 17*19 = 323.


MATHEMATICA

p=2; t={}; Do[q=NextPrime[p]; If[Reverse[x=IntegerDigits[p*q]]==x, AppendTo[t, q]]; p=q, {n, 150000}]; t (* Jayanta Basu, Jun 05 2013 *)


CROSSREFS

Cf. A028979, A028888.
Sequence in context: A075226 A192598 * A082628 A166096 A139220 A139221
Adjacent sequences: A028975 A028976 A028977 * A028979 A028980 A028981


KEYWORD

nonn,base


AUTHOR

Patrick De Geest


STATUS

approved



