OFFSET
1,1
LINKS
FORMULA
A084143(a(n)) > 3. - Ray Chandler, Sep 20 2023
EXAMPLE
E.g., 311 = 101 + 103 + 107 = 53 + 59 + 61 + 67 + 71 = 31 + 37 + 41 + 43 + 47 + 53 + 59 = 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47.
MATHEMATICA
Clear[lst, lst1, m, n, p, a, b] m=2*6!; lst={}; Do[p=Prime[a]; Do[p+=Prime[b]; If[p<Prime[m]*2+3, AppendTo[lst, p]], {b, a+1, m+2, 1}], {a, m}]; lst1=Sort[lst]; lst={}; Do[If[lst1[[n]]==lst1[[n+1]]&&lst1[[n]]==lst1[[n+2]]&&lst1[[n]]==lst1[[n+3]], AppendTo[lst, lst1[[n]]]], {n, Length[lst1]-3}]; Union[lst] (* Vladimir Joseph Stephan Orlovsky, Aug 15 2009 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Patrick De Geest, Feb 04 2002
EXTENSIONS
Offset corrected by Donovan Johnson, Nov 14 2013
STATUS
approved