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 A328843 a(n) = A328841(A276086(n)). 4
 1, 2, 3, 6, 9, 6, 3, 8, 9, 30, 39, 30, 7, 38, 39, 30, 219, 240, 33, 248, 249, 240, 249, 240, 247, 248, 249, 2550, 2559, 2550, 7, 8, 9, 36, 33, 36, 33, 38, 39, 210, 249, 210, 37, 248, 249, 210, 249, 2520, 243, 248, 2559, 2520, 2559, 2520, 2557, 2558, 2559, 2520, 32379, 32550, 37, 38, 39, 246, 219, 246, 243, 248, 249, 210, 249, 2520, 247 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Antti Karttunen, Table of n, a(n) for n = 0..32768 FORMULA a(n) = A328841(A276086(n)). a(n) = A276086(n) - A328844(n). For all n >= 0, A257993(a(n)) = A328570(n). PROG (PARI) A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); }; A328841(n) = { my(p=2, r=1, s=0); while(n, s += ((!!(n%p))*r); r *= p; n = n\p; p = nextprime(1+p)); (s); }; A328843(n) = A328841(A276086(n)); CROSSREFS Cf. A257993, A276086, A328570, A328841, A328844. Sequence in context: A193079 A191397 A087494 * A021426 A309008 A249182 Adjacent sequences:  A328840 A328841 A328842 * A328844 A328845 A328846 KEYWORD nonn AUTHOR Antti Karttunen, Oct 30 2019 STATUS approved

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Last modified December 6 03:59 EST 2021. Contains 349562 sequences. (Running on oeis4.)