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A342464 Largest digit value when A329886(n) is written in primorial base, where A329886 is the primorial inflation of Doudna-tree. 4

%I #11 Mar 18 2021 23:39:50

%S 1,1,1,2,1,2,1,1,1,2,6,4,4,2,1,2,1,2,6,4,8,5,5,3,6,8,5,4,11,2,6,1,1,2,

%T 6,4,4,1,3,1,16,5,4,3,9,10,8,3,10,12,10,6,10,7,2,3,18,10,5,4,12,2,4,2,

%U 1,2,6,4,13,12,10,8,12,8,13,2,4,6,7,2,15,15,12,10,9,8,7,6,10,12,10,9,11,6,9,6,18,15

%N Largest digit value when A329886(n) is written in primorial base, where A329886 is the primorial inflation of Doudna-tree.

%H Antti Karttunen, <a href="/A342464/b342464.txt">Table of n, a(n) for n = 0..16383</a>

%H <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a>

%H <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>

%F a(n) = A328114(A329886(n)) = A051903(A342456(n)) = A329344(A005940(1+n)).

%o (PARI)

%o A283980(n) = {my(f=factor(n)); prod(i=1, #f~, my(p=f[i, 1], e=f[i, 2]); if(p==2, 6, nextprime(p+1))^e)}; \\ From A283980

%o A329886(n) = if(n<2,1+n,if(!(n%2),A283980(A329886(n/2)),2*A329886(n\2)));

%o A328114(n) = { my(s=0, p=2); while(n, s = max(s,(n%p)); n = n\p; p = nextprime(1+p)); (s); };

%o A342464(n) = A328114(A329886(n));

%Y Cf. A005940, A051903, A108951, A276086, A328114, A329344, A329886, A342456, A342461, A342462.

%K nonn

%O 0,4

%A _Antti Karttunen_, Mar 15 2021

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Last modified August 15 05:43 EDT 2024. Contains 375172 sequences. (Running on oeis4.)