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A266345 Positions of records in A266344. 1

%I #5 Jan 02 2016 04:13:25

%S 1,72,120,1440,1680,2160,2520,37800,45360,50400,55440,65520,75600,

%T 83160,1441440,1663200,1801800,1884960,1965600,2106720,2162160,

%U 2751840,2827440,2882880,3326400,3603600

%N Positions of records in A266344.

%C The corresponding record values, A266344(a(n)) are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 14, 15, 17, 19, 22, 24, 25, 26, 27, 28, 33, 34, 38, 40, 42, 48, ...

%o (PARI)

%o A084558(n) = { my(m=1); if(0==n,n,while(m!<=n,m++);return(m-1)); }

%o A266344(n) = sumdiv(n, d, ((d <= (n/d)) && (A084558(d)==A084558(n/d))));

%o m=0; i=0; for(n=1, 1625621761, k = A266344(n); if(k > m, m = k; i++; write("b266345.txt", i, " ", n)));

%Y Cf. A266344.

%K nonn

%O 1,2

%A _Antti Karttunen_, Dec 28 2015

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Last modified April 25 09:19 EDT 2024. Contains 371967 sequences. (Running on oeis4.)