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 A104723 Moebius transform of Jacobsthal numbers. 1
 0, 1, 0, 2, 4, 10, 18, 42, 80, 168, 330, 682, 1340, 2730, 5418, 10910, 21760, 43690, 87192, 174762, 349180, 699006, 1397418, 2796202, 5590960, 11184800, 22366890, 44739072, 89473020, 178956970, 357902670, 715827882, 1431633920, 2863310846 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS Table of n, a(n) for n=0..33. FORMULA a(n) = Sum_{d|n} mu(n/d)*A001045(d). a(n+3) = 3*A027375(n+3) (since the Moebius transform of (-1)^n is (-1, -1, 2, 0, 0, 0, ...)). G.f.: Sum_{k>=1} mu(k) * x^k / (1 - x^k - 2*x^(2*k)). - Ilya Gutkovskiy, Feb 06 2020 CROSSREFS Cf. A001045, A309729. Sequence in context: A197049 A303438 A348396 * A206140 A079162 A257593 Adjacent sequences: A104720 A104721 A104722 * A104724 A104725 A104726 KEYWORD nonn AUTHOR Paul Barry, Mar 20 2005 STATUS approved

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Last modified June 10 03:49 EDT 2023. Contains 363187 sequences. (Running on oeis4.)