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a(n) = n^7 * Sum_{p|n, p prime} 1/p^7.
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%I #9 Feb 06 2022 02:15:38

%S 0,1,1,128,1,2315,1,16384,2187,78253,1,296320,1,823671,80312,2097152,

%T 1,5062905,1,10016384,825730,19487299,1,37928960,78125,62748645,

%U 4782969,105429888,1,181139311,1,268435456,19489358,410338801,901668,648051840,1,893871867,62750704

%N a(n) = n^7 * Sum_{p|n, p prime} 1/p^7.

%H Seiichi Manyama, <a href="/A351247/b351247.txt">Table of n, a(n) for n = 1..10000</a>

%F a(A000040(n)) = 1.

%e a(6) = 2315; a(6) = 6^7 * Sum_{p|6, p prime} 1/p^7 = 279936 * (1/2^7 + 1/3^7) = 2315.

%Y Sequences of the form n^k * Sum_{p|n, p prime} 1/p^k for k = 0..10: A001221 (k=0), A069359 (k=1), A322078 (k=2), A351242 (k=3), A351244 (k=4), A351245 (k=5), A351246 (k=6), this sequence (k=7), A351248 (k=8), A351249 (k=9), A351262 (k=10).

%Y Cf. A000040.

%K nonn

%O 1,4

%A _Wesley Ivan Hurt_, Feb 05 2022