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A087390
a(1) = 7; a(n+1) is the least prime formed by adding one or more digits to the digit reversal of a(n).
4
7, 71, 173, 3719, 91733, 3371947, 749173303, 3033719477, 774917330303, 30303371947759, 957749173303031, 13030337194775911, 1195774917330303119, 9113030337194775911093, 390119577491733030311941
OFFSET
1,1
EXAMPLE
a(2) = 71, a(3) is the smallest prime beginning with 17 and is 173.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 09 2003
EXTENSIONS
More terms from David Wasserman, May 25 2005
STATUS
approved