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 A050871 Row sums of even numbered rows of array T in A050870 (periodic binary words). 2
 0, 2, 4, 10, 16, 34, 76, 130, 256, 568, 1036, 2050, 4336, 8194, 16396, 33814, 65536, 131074, 266176, 524290, 1048816, 2113462, 4194316, 8388610, 16842496, 33555424, 67108876, 134479360, 268435696, 536870914, 1074793396, 2147483650 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..31. PROG (PARI) T(n, k) = binomial(n, k) - sumdiv(gcd(n+!n, k), d, moebius(d)*binomial(n/d, k/d)); \\ Michel Marcus, Aug 20 2021 row(n) = vector(n+1, k, k--; T(n, k)); a(n) = n*=2; vecsum(row(n)); \\ Michel Marcus, Aug 20 2021 CROSSREFS Cf. A050870, A050872. Sequence in context: A153927 A117862 A105024 * A348305 A277918 A238720 Adjacent sequences: A050868 A050869 A050870 * A050872 A050873 A050874 KEYWORD nonn AUTHOR Clark Kimberling EXTENSIONS a(29) onward corrected by Sean A. Irvine, Aug 20 2021 STATUS approved

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Last modified June 22 23:47 EDT 2024. Contains 373629 sequences. (Running on oeis4.)