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 A050221 a(n) = number of sets of consecutive primes whose arithmetic mean is A060863(n). 4
 1, 1, 1, 2, 1, 1, 2, 1, 3, 1, 3, 2, 2, 1, 1, 2, 2, 2, 2, 5, 2, 3, 2, 4, 2, 1, 3, 2, 1, 1, 2, 2, 1, 5, 1, 4, 2, 2, 1, 3, 1, 2, 1, 1, 4, 1, 2, 1, 1, 1, 1, 3, 2, 2, 2, 1, 1, 5, 3, 1, 1, 1, 2, 2, 2, 1, 1, 3, 3, 1, 4, 1, 2, 2, 1, 3, 3, 1, 3, 1, 2, 1, 1, 3, 1, 1, 1, 2, 1, 3, 1, 1, 1, 2, 3, 1, 1, 2, 4, 4, 2, 4, 1, 3, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Essentially A122821 with the 0's removed. LINKS FORMULA a(n) = A122821(A060863(n)). EXAMPLE For n=4; A060863(4) = 5. the two sets are 5/1 = 5, (3+5+7)/3 = 5. so a(4)=2. MATHEMATICA f[n_]:=Block[{i=1, j, c=0, m}, While[Prime[i]<=n, j=1; While[m=Sum[Prime[k], {k, i, i+j-1}]/j; If[m==n, c++ ]; m0&] (* Ray Chandler, Oct 03 2006 *) CROSSREFS Cf. A060863, A122821. Sequence in context: A247299 A127586 A055893 * A213235 A113279 A213234 Adjacent sequences:  A050218 A050219 A050220 * A050222 A050223 A050224 KEYWORD easy,nonn AUTHOR Naohiro Nomoto, May 08 2003 EXTENSIONS Extended by Ray Chandler, Oct 03 2006 STATUS approved

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Last modified February 15 22:28 EST 2019. Contains 320138 sequences. (Running on oeis4.)