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A126344
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Column 1 of triangle A126343.
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1
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1, 1, 7, 85, 1071, 16891, 363378, 9545369, 279725995, 9251279911, 348363897498, 14582418473041, 666721363539674, 33176394788669133, 1789799842666045486
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history;
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internal format)
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