OFFSET
0,1
COMMENTS
a(27) = 75787577. No more terms < 10^8. - David Wasserman, Dec 27 2007
EXAMPLE
a(3)=17 because it is the least number that contains 3 primes in the sequence 1,7,8,15,23,38,61,99,160,259.
MATHEMATICA
f[n_] := Block[{id = IntegerDigits[n], t = Floor[ Log[10, n] + 1], b}, Do[ b[i] = id[[i]], {i, t}]; b[i_] := b[i] = Plus @@ Table[b[i - j], {j, t}]; k = t + 1; While[b[k] < n^2, k++ ]; Count[ PrimeQ[ Table[b[i], {i, k - 1}]], True]]; t = Table[0, {50}]; Do[c = f[n]; If[ t[[c + 1]] == 0, t[[c + 1]] = n; Print[c, " = ", n]], {n, 10, 12000000}]; t (* Robert G. Wilson v, Oct 07 2004 *)
CROSSREFS
KEYWORD
base,nonn,more
AUTHOR
Jason Earls, Sep 17 2004
EXTENSIONS
Corrected and extended by Robert G. Wilson v, Oct 07 2004
a(25), a(27) and better definition from David Wasserman, Dec 27 2007
STATUS
approved