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A014980
Start with 5. Multiply two numbers closest to n/2 to get next number.
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1
5, 6, 9, 20, 100, 2500, 1562500, 610351562500, 93132257461547851562500, 2168404344971008868014905601739883422851562500, 11754943508222875079687365372222456778186655567720875215087517062784172594547271\ 72851562500
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Maintained by
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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.
AT&T Labs Research
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