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 A324051 a(n) = A106315(A156552(n)). 6
 0, 1, 2, 5, 4, 2, 6, 0, 1, 18, 10, 3, 16, 4, 12, 67, 12, 4, 18, 30, 36, 260, 22, 16, 8, 8, 44, 5, 20, 1029, 30, 28, 164, 36, 28, 6, 256, 96, 44, 4102, 36, 7, 66, 16, 104, 16391, 46, 12, 13, 32, 130, 8, 28, 51, 70, 480, 942, 65544, 42, 9, 2724, 32, 66, 30, 84, 262153, 124, 508, 40, 10, 4, 1048586, 3320, 20, 188, 50, 52, 11, 78, 24 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,3 COMMENTS Positions of zeros, which is sequence A005940(1+A001599(n)) sorted into ascending order: 2, 9, 125, 325, 351, 4199, ..., has A324201 as its subsequence. LINKS Antti Karttunen, Table of n, a(n) for n = 2..4473 FORMULA a(n) = A106315(A156552(n)). a(n) = (A156552(n)*A324105(n)) mod A323243(n). PROG (PARI) A106315(n) = (n*numdiv(n) % sigma(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)))); A324051(n) = A106315(A156552(n)); CROSSREFS Cf. A001599, A005940, A106315, A156552, A158879, A323243, A323244, A324049, A324105, A324201. Cf. also A324057, A324187. Sequence in context: A177067 A055127 A152669 * A307037 A049060 A092462 Adjacent sequences:  A324048 A324049 A324050 * A324052 A324053 A324054 KEYWORD nonn AUTHOR Antti Karttunen, Feb 19 2019 STATUS approved

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Last modified July 28 19:33 EDT 2021. Contains 346335 sequences. (Running on oeis4.)