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 A280728 Number of even divisors of Lucas(n). 1
 1, 0, 0, 2, 0, 0, 3, 0, 0, 4, 0, 0, 4, 0, 0, 8, 0, 0, 8, 0, 0, 8, 0, 0, 4, 0, 0, 8, 0, 0, 12, 0, 0, 8, 0, 0, 8, 0, 0, 16, 0, 0, 24, 0, 0, 64, 0, 0, 8, 0, 0, 16, 0, 0, 20, 0, 0, 16, 0, 0, 32, 0, 0, 64, 0, 0, 24, 0, 0, 32, 0, 0, 8, 0, 0, 128, 0, 0, 12, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS Amiram Eldar, Table of n, a(n) for n = 0..1000 FORMULA a(n) = A183063(A000032(n)). MATHEMATICA a[n_]:=Block[{d=Divisors[LucasL[n]]}, Count[EvenQ[d], True]]; Table[a[n], {n, 0, 80}] CROSSREFS Cf. A000032, A183063, A193495. Sequence in context: A049597 A210951 A233440 * A175676 A035377 A136274 Adjacent sequences:  A280725 A280726 A280727 * A280729 A280730 A280731 KEYWORD nonn AUTHOR Vincenzo Librandi, Jan 09 2017 EXTENSIONS Offset corrected by Amiram Eldar, Sep 03 2019 STATUS approved

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Last modified June 15 15:16 EDT 2021. Contains 345049 sequences. (Running on oeis4.)