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 A167209 a(0) = 0; for n>=0, a(n+1) = a(n) + x where x is the smallest nonnegative number which is not equal to a(i) +/- a(k) or a(i)/2 for any 0<=i<=n, 0<=k<=n. 4
 0, 1, 4, 10, 17, 29, 44, 67, 91, 117, 148, 180, 215, 251, 288, 329, 371, 420, 471, 523, 576, 631, 687, 746, 806, 870, 935, 1004, 1074, 1146, 1221, 1297, 1376, 1456, 1538, 1623, 1709, 1802, 1896, 1993, 2092, 2194, 2300, 2409, 2519, 2631, 2753, 2876, 3001, 3127, 3255, 3385, 3518, 3655, 3796, 3939 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS A maximal expulsion set of natural numbers. Note that this definition is different from that of A047699. LINKS Rémy Sigrist, Table of n, a(n) for n = 0..10000 K. S. Brown, Expulsion Sets Rémy Sigrist, C program for A167209 PROG (C) See Links section. CROSSREFS Cf. A169799, A169820, A047699. Sequence in context: A213497 A339576 A047699 * A096077 A008147 A310543 Adjacent sequences: A167206 A167207 A167208 * A167210 A167211 A167212 KEYWORD nonn AUTHOR N. J. A. Sloane, Sep 03 2014 EXTENSIONS Initial value changed to a(0)=0 by N. J. A. Sloane, Feb 18 2019 (otherwise the definition did not match the terms). STATUS approved

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Last modified August 3 10:11 EDT 2024. Contains 374885 sequences. (Running on oeis4.)