

A075801


Differences between adjacent palindromic nonprime numbers A032350.


0



3, 2, 2, 1, 13, 11, 11, 11, 11, 11, 11, 11, 12, 10, 20, 20, 10, 31, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 20, 10, 10, 20, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 10, 20, 10, 20, 10, 31
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..70.


EXAMPLE

a(1)=41=3, a(5)=229=13.


MAPLE

test := proc(n) local d; d := convert(n, base, 10); return ListTools[Reverse](d)=d and not isprime(n); end; s := []; for n from 1 to 1000 do if test(n) then s := [op(s), n]; end; od; a := [op(2..1, s)op(1..2, s)];


CROSSREFS

Cf. A037010, A032350.
Sequence in context: A130195 A071048 A098054 * A243160 A272694 A292370
Adjacent sequences: A075798 A075799 A075800 * A075802 A075803 A075804


KEYWORD

nonn,base


AUTHOR

Jani Melik, Oct 13 2002


EXTENSIONS

Edited by Dean Hickerson, Oct 21 2002


STATUS

approved



