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A358232
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Numbers k for which A276086(k) == 1 mod A003415(k), where A276086 is the primorial base exp-function, and A003415 is the arithmetic derivative.
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2
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4, 16, 54, 66, 864, 1710, 18900, 71254, 120731, 492943, 625081, 700149, 1489459, 3564419, 44995876, 219794251, 297776323, 596506003, 642171139, 972082711, 1065608507, 1252704562, 1385872853, 1416187590, 1799971549, 1818740449
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OFFSET
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1,1
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LINKS
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PROG
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(PARI)
A003415(n) = if(n<=1, 0, my(f=factor(n)); n*sum(i=1, #f~, f[i, 2]/f[i, 1]));
A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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