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A346599
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Smallest k such that A344005(k) = n.
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4
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1, 3, 4, 5, 15, 7, 8, 9, 45, 11, 33, 13, 91, 35, 16, 17, 51, 19, 76, 84, 77, 23, 69, 25, 65, 27, 63, 29, 87, 31, 32, 88, 187, 85, 180, 37, 703, 247, 104, 41, 123, 43, 172, 99, 115, 47, 141, 49, 175, 255, 204, 53, 159, 135, 280, 133, 551, 59, 177, 61, 1891, 217, 64, 160, 143, 67
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OFFSET
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1,2
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LINKS
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EXAMPLE
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A344005(15) = 5 is the first appearance of 5 in A344005, so a(5) = 15.
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MATHEMATICA
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Array[(k=1; n=1; While[m=1; While[!Divisible[m(m+1), n], m++]; m!=#, n++]; n)&, 70] (* Giorgos Kalogeropoulos, Jul 29 2021 *)
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PROG
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(PARI) f(n) = my(m=1); while (m*(m+1) %n, m++); m; \\ A344005
a(n) = my(k=1); while (f(k) !=n, k++); k; \\ Michel Marcus, Jul 29 2021
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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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