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 A245229 Primes that are the sum of 7 cubes and no fewer. 0
 7, 47, 61, 103, 113, 211, 223, 229, 311, 337, 401, 419, 491, 787, 1021, 1453, 1489, 1697, 2039, 3659, 4703, 5279 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Intersection of A018890 and A000040. If, as is conjectured, the last term of A018890 is 8042, there are no more terms than those shown. - Robert Israel, Jul 14 2014 LINKS EXAMPLE a(1) = 7 = 1^3 + 1^3 + 1^3 + 1^3 + 1^3 + 1^3 + 1^3. a(2) = 47 = 3^3 + 2^3 + 2^3 + 1^3 + 1^3 + 1^3 + 1^3. a(3) = 61 = 3^3 + 2^3 + 2^3 + 2^3 + 2^3 + 1^3 + 1^3. a(4) = 103 = 4^3 + 3^3 + 2^3 + 1^3 + 1^3 + 1^3 + 1^3. MAPLE for n from 1 to 10^4 do   m:= floor(n^(1/3));   if m^3 = n then M[n]:= 1   else     M[n]:= 1 + min(seq(M[n-j^3], j=1..m));   fi od: select(n -> M[n]=7 and isprime(n), [\$1..10^4]); # Robert Israel, Jul 14 2014 CROSSREFS Cf. A000578, A018890, A000040. Sequence in context: A124837 A122731 A059452 * A141882 A240569 A261183 Adjacent sequences:  A245226 A245227 A245228 * A245230 A245231 A245232 KEYWORD nonn,less,fini AUTHOR Rafael F. Farias, Jul 13 2014 STATUS approved

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Last modified September 20 20:02 EDT 2020. Contains 337265 sequences. (Running on oeis4.)