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 A071335 Number of partitions of n into sum of at most three primes. 6
 0, 1, 1, 1, 2, 2, 3, 2, 3, 3, 3, 3, 4, 3, 4, 4, 5, 4, 5, 4, 6, 5, 6, 6, 6, 6, 7, 5, 8, 5, 8, 5, 10, 6, 8, 8, 10, 6, 11, 5, 12, 7, 12, 7, 13, 7, 14, 9, 13, 9, 15, 7, 17, 8, 15, 8, 17, 7, 17, 10, 18, 9, 20, 8, 21, 11, 21, 8, 21, 7, 23, 11, 23, 11, 23, 10, 28, 12, 25, 11, 26 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS a(n) = A010051(n) + A061358(n) + A068307(n). [From Reinhard Zumkeller, Aug 08 2009] LINKS T. D. Noe, Table of n, a(n) for n=1..10000 EXAMPLE a(21)=6 as 21 = 2+19 = 2+2+17 = 3+5+13 = 3+7+11 = 5+5+11 = 7+7+7. MATHEMATICA goldbachcount[p1_] := (parts=IntegerPartitions[p1, 3]; count=0; n=1;   While[n<=Length[parts], If[Intersection[Flatten[PrimeQ[parts[[n]]]]][[1]]==True, count++]; n++]; count); Table[goldbachcount[i], {i, 1, 100}] (* Frank M Jackson, Mar 25 2013 *) Table[Length[Select[IntegerPartitions[n, 3], AllTrue[#, PrimeQ]&]], {n, 90}] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Oct 21 2016 *) CROSSREFS Cf. A002375, A068307, A025583. Sequence in context: A097849 A100678 A026834 * A176839 A179844 A076223 Adjacent sequences:  A071332 A071333 A071334 * A071336 A071337 A071338 KEYWORD nonn,look AUTHOR Reinhard Zumkeller, May 19 2002 STATUS approved

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