OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..200
EXAMPLE
a(5) = 1397531 which contains as trailing digits the right concatenation of first 5 odd numbers 97531.
MATHEMATICA
a068839[n_] := Module[{}, a1=Flatten[Table[IntegerDigits[i], {i, n, 1, -2}]]; FromDigits[pref=1; a2=a1; While[ !PrimeQ[FromDigits[a2]], a2=Join[IntegerDigits[pref], a1]; pref+=1]; a2]]; Table[a068839[i], {i, 1, 33, 2}]
sp[n_]:=Module[{k=0, r=FromDigits[Flatten[IntegerDigits/@Reverse[Range[1, n, 2]]]]}, While[ !PrimeQ[ k*10^IntegerLength[r]+r], k++]; k*10^IntegerLength[r]+r]; Table[ sp[i], {i, 1, 33, 2}] (* Harvey P. Dale, May 25 2016 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Mar 10 2002
EXTENSIONS
More terms from Vit Planocka (planocka(AT)mistral.cz), Oct 18 2002
More terms from Harvey P. Dale, May 25 2016
STATUS
approved