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A081302
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Subdiagonal of square array A081297.
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5
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1, 1, 21, 61, 1891, 9633, 404713, 2997541, 159902271, 1564345201, 101406750589, 1236882490845, 94479649710811, 1382731226210881, 121677107761110993, 2079381120597925237, 207197254527662127511, 4051708966720224576081
(list; graph; refs; listen; history; internal format)
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