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A139047
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a(0)=a(1)=1. For n >= 2, if a(n-1) is coprime to n, then a(n) = a(n-1)+a(n-2). Otherwise, a(n)=1.
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1
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1, 1, 2, 3, 5, 1, 6, 7, 13, 20, 1, 21, 1, 22, 1, 23, 24, 47, 71, 118, 1, 119, 120, 239, 359, 598, 1, 599, 600, 1199, 1799, 2998, 1, 2999, 3000, 1, 3001, 3002, 1, 3003, 3004, 6007, 9011, 15018, 1, 15019, 1, 15020, 1, 15021, 15022, 30043, 1, 30044, 1, 30045, 30046, 60091
(list; graph; refs; listen; history; internal format)
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