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 A121339 Periodic part of continued fraction for square roots of integers. 1
 2, 1, 2, 4, 2, 4, 1, 1, 1, 4, 1, 4, 6, 3, 6, 2, 6, 1, 1, 1, 1, 6, 1, 2, 1, 6, 1, 6, 8, 4, 8, 2, 1, 3, 1, 2, 8, 2, 8, 1, 1, 2, 1, 1, 8, 1, 2, 4, 2, 1, 8, 1, 3, 1, 8, 1, 8, 10, 5, 10, 3, 2, 3, 10, 2, 1, 1, 2, 10, 2, 10, 1, 1, 3, 5, 3, 1, 1, 10, 1, 1, 1, 10, 1, 2, 1, 10, 1, 4, 1, 10, 1, 10, 12, 6, 12, 4, 12 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 LINKS T. D. Noe, Rows n=2..1000 of triangle, flattened EXAMPLE The table starts: 2 1 2 4 2 4 1 1 1 4 1 4 MATHEMATICA a[n_] := If[ IntegerQ[ Sqrt[n] ], {}, ContinuedFraction[ Sqrt[n] ] // Last]; Table[a[n], {n, 2, 39}] // Flatten (* Jean-François Alcover, Sep 10 2012 *) CROSSREFS Cf. A003285 (row lengths), A013943 (row lengths for nonempty rows). Sequence in context: A186731 A180108 A300417 * A307236 A324382 A234359 Adjacent sequences:  A121336 A121337 A121338 * A121340 A121341 A121342 KEYWORD nice,nonn,tabf AUTHOR Franklin T. Adams-Watters, Aug 28 2006 STATUS approved

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Last modified February 27 13:18 EST 2020. Contains 332306 sequences. (Running on oeis4.)