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A055556
a(n)-s are differences of such arithmetical progressions of which the terms give chains of n consecutive non-square-free numbers if started with terms of
A045882
(n) or
A051681
(n).
+0
1
4, 72, 58800, 1757711340, 54169994838960, 950645196424756293060600, 94630125612279498512066506747436400, 14119054639791549212725337736060964803166626000
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Maintained by
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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.
AT&T Labs Research
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