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 A083094 Numbers k such that Sum_{j=0..k} (binomial(k,j) mod 3) is odd. 3
 0, 8, 20, 24, 56, 60, 72, 80, 164, 168, 180, 188, 216, 224, 236, 240, 488, 492, 504, 512, 540, 548, 560, 564, 648, 656, 668, 672, 704, 708, 720, 728, 1460, 1464, 1476, 1484, 1512, 1520, 1532, 1536, 1620, 1628, 1640, 1644, 1676, 1680, 1692, 1700, 1944, 1952 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Apparently a(n)/2 (mod 3) = A010060(n), the Thue-Morse sequence. LINKS PROG (PARI) isok(n) = sum(k=0, n, binomial(n, k) % 3) % 2; \\ Michel Marcus, Dec 05 2013 CROSSREFS Cf. A010060, A051638, A083093, A083095. Sequence in context: A205226 A205318 A100212 * A164916 A207190 A110116 Adjacent sequences:  A083091 A083092 A083093 * A083095 A083096 A083097 KEYWORD easy,nonn AUTHOR Benoit Cloitre, Apr 22 2003 EXTENSIONS More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 29 2003 STATUS approved

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Last modified April 13 06:02 EDT 2021. Contains 342935 sequences. (Running on oeis4.)