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 A083396 Least n such that n and 2k+n are both brilliant numbers. 0
 4, 6, 4, 6, 4, 9, 21, 9, 169, 15, 121, 25, 9, 21, 289, 221, 15, 253, 209, 9, 247, 143, 253, 121, 341, 169, 323, 437, 319, 187, 299, 649, 121, 221, 253, 49, 377, 247, 143, 209, 391, 169, 35, 121, 209, 299, 49, 25, 221, 21, 187, 143, 15, 35, 143, 9, 209, 377, 25, 49, 21 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Conjecture: for any k >= 1 there will always be a brilliant constellation of the form {n, 2k+n} for some n. (True for all k <= 5000.) LINKS EXAMPLE a(9)=169 because 169=13*13 and 169+18=11*17. CROSSREFS Cf. A078972, A083284, A083285. Sequence in context: A010711 A168428 A127018 * A142973 A181110 A199959 Adjacent sequences:  A083393 A083394 A083395 * A083397 A083398 A083399 KEYWORD base,nonn AUTHOR Jason Earls, Jun 06 2003 STATUS approved

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Last modified June 18 07:15 EDT 2019. Contains 324203 sequences. (Running on oeis4.)