1,1

Table of n, a(n) for n=1..26.

a(1)=6 because first prime 2 occurs after 314159,

a(2)=2 because second prime 3 occurs after 26,

a(3)=0 because third prime 5 is adjacent to 3, ...

Sequence in context: A119831 A224842 A318138 * A195486 A111754 A154480

Adjacent sequences: A130140 A130141 A130142 * A130144 A130145 A130146

nonn,base

Jani Melik, Aug 01 2007

approved