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 A050872 a(n) = (1/2)*A050871 (row sums of array T in A050870, periodic binary words). 1
 0, 1, 2, 5, 8, 17, 38, 65, 128, 284, 518, 1025, 2168, 4097, 8198, 16907, 32768, 65537, 133088, 262145, 524408, 1056731, 2097158, 4194305, 8421248, 16777712, 33554438, 67239680, 134217848, 268435457, 537396698, 1073741825, 2147483648 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Table of n, a(n) for n=0..32. PROG (PARI) T(n, k) = binomial(n, k) - sumdiv(gcd(n+!n, k), d, moebius(d)*binomial(n/d, k/d)); \\ A050870 row(n) = vector(n+1, k, k--; T(n, k)); a(n) = n*=2; vecsum(row(n))/2; \_ Michel Marcus, Aug 20 2021 CROSSREFS Cf. A050870, A050871. Sequence in context: A181586 A112361 A343129 * A086324 A293830 A073708 Adjacent sequences: A050869 A050870 A050871 * A050873 A050874 A050875 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 December 9 12:31 EST 2023. Contains 367690 sequences. (Running on oeis4.)