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First difference of A193992. - Hans Havermann, Aug 19 2011
Hans Havermann, Table of n, a(n) for n = 1..196
Index entries for Colombian or self numbers and related sequences
Cf. A006886, A193992.
Sequence in context: A209163 A124932 A248788 * A110042 A123027 A100652
Adjacent sequences: A194229 A194230 A194231 * A194233 A194234 A194235
Hans Havermann, Aug 19 2011