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A051345 Odd numbers not of the form 3 + twin prime + twin prime. 1
1, 3, 5, 7, 97, 99, 101, 403, 405, 407, 517, 519, 521, 787, 789, 791, 907, 909, 911, 1117, 1119, 1121, 1147, 1149, 1151, 1267, 1269, 1271, 1357, 1359, 1361, 3247, 3249, 3251, 4207, 4209, 4211 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
MATHEMATICA
tps=Flatten[Select[Partition[Prime[Range[2000]], 2, 1], Last[#]-First[#]==2&]]; Complement[Range[1, Last[tps], 2], Union[Total[#]+3&/@Tuples[tps, {2}]]] (* Harvey P. Dale, Apr 01 2011 *)
CROSSREFS
Essentially A007534 + 3.
Sequence in context: A201270 A160360 A082697 * A242387 A104388 A110337
KEYWORD
nonn,nice
AUTHOR
EXTENSIONS
No others below 100000. Conjectured to be complete.
STATUS
approved

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Last modified March 19 06:21 EDT 2024. Contains 370953 sequences. (Running on oeis4.)