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 A323512 a(n) = A079559(A156552(n)). 3
 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1 COMMENTS Characteristic function of numbers n whose unary-binary encoded factorization [A156552(n)] is a term of A005187. Characteristic function of the range of f(n) = A005940(1+A005187(n)). LINKS Antti Karttunen, Table of n, a(n) for n = 1..65537 FORMULA a(n) = A079559(A156552(n)). PROG (PARI) A036987(n) = !bitand(n, 1+n); A053644(n) = { my(k=1); while(k<=n, k<<=1); (k>>1); }; \\ From A053644 A053645(n) = (n-A053644(n)); A079559(n) = if(!n, 1, (1-A036987(1+n))*A079559(A053645(1+n))); A064989(n) = {my(f); f = factor(n); if((n>1 && f[1, 1]==2), f[1, 2] = 0); for (i=1, #f~, f[i, 1] = precprime(f[i, 1]-1)); factorback(f)}; A156552(n) = if(1==n, 0, if(!(n%2), 1+(2*A156552(n/2)), 2*A156552(A064989(n)))); A323512(n) = A079559(A156552(n)); CROSSREFS Cf. A005187, A005940, A079559, A156552. Cf. also A323511. Sequence in context: A286349 A145575 A077605 * A014672 A015335 A014906 Adjacent sequences:  A323509 A323510 A323511 * A323513 A323514 A323515 KEYWORD nonn AUTHOR Antti Karttunen, Jan 18 2019 STATUS approved

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Last modified July 19 22:14 EDT 2019. Contains 325168 sequences. (Running on oeis4.)