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Journal of Integer Sequences, Vol. 17 (2014), Article 14.3.8 |
Abstract:
(Concerned with sequences A000027 A005408 A016921 A114646 A114698 A185095 A186740 A198632 A198636.)
Received December 7 2013; revised version received January 25 2014. Published in Journal of Integer Sequences, February 16 2014. Corollary 3 and Proposition 4 corrected, May 21 2015.