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A218719
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a(n) is smallest number such that a(n)^2 + 1 is divisible by 97^n.
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1
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0, 22, 4052, 107551, 22709274, 331407850, 197177418061, 26457926739667, 2369608176604944, 76004727767164666, 25163629663367816827, 1965881512952938486496, 191165497320828772935835, 21700278688179406782082106, 560121950820639295011033922
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OFFSET
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0,2
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LINKS
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EXAMPLE
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a(3) = 107551 because 107551^2+1 = 2 * 97 ^ 3 * 6337.
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MATHEMATICA
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b=22; n97=97; jo=Join[{0, b}, Table[n97=97*n97; b=PowerMod[b, 97, n97]; b=Min[b, n97-b], {99}]]
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CROSSREFS
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Cf. A002522, A049532, A034939, A218709, A218710, A218712, A218713, A218714, A218715, A218716, A218717, A218718.
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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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