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A105822
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For n > 2, a(n) > 0 not appeared previously is such that a(n-1)^2+4*a(n-2)*a(n)=d^2 is a minimal square, a(1)=1, a(2)=2.
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13
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1, 2, 3, 5, 8, 4, 12, 7, 10, 17, 6, 11, 21, 32, 13, 19, 14, 33, 20, 28, 24, 27, 42, 40, 18, 9, 35, 44, 39, 54, 48, 22, 15, 37, 52, 89, 30, 59, 23, 36, 99, 70, 16, 86, 47, 45, 92, 65, 157, 34, 123, 135, 222, 56, 136, 82, 29, 53, 102, 155, 25, 130, 87, 43, 170, 213, 63, 150, 57
(list; graph; refs; listen; history; internal format)
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