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 A230287 First differences of A016052/3 (= A230286). 4
 1, 2, 1, 2, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 4, 2, 4, 2, 4, 5, 4, 5, 4, 5, 4, 2, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 7, 5, 4, 5, 4, 5, 7, 8, 4, 5, 4, 5, 7, 8, 4, 5, 7, 5, 7, 5, 4, 5, 7, 8, 7, 2, 1, 2, 4, 2, 4, 5, 4, 5, 1, 2, 1, 2, 4, 2, 4, 5, 4, 5, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This sequence captures the essence of A016052. Essentially the same as A084228/3. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 Index entries for Colombian or self numbers and related sequences PROG (Haskell) a230287 n = a230287_list !! (n-1) a230287_list = zipWith (-) (tail a230286_list) a230286_list CROSSREFS Cf. A004207, A016052, A230286, A084228, A065075. Sequence in context: A359953 A330559 A114228 * A336336 A168580 A356206 Adjacent sequences: A230284 A230285 A230286 * A230288 A230289 A230290 KEYWORD nonn,base AUTHOR Reinhard Zumkeller and N. J. A. Sloane, Oct 16 2013 STATUS approved

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Last modified April 25 09:15 EDT 2024. Contains 371967 sequences. (Running on oeis4.)