1,1
David Wells, "The Penguin Book of Curious and Interesting Numbers," Penguin Books, London, 1986, pages 135, 159 and 185.
Adjacent sequences: A039685 A039686 A039687 this_sequence A039689 A039690 A039691
Sequence in context: A113546 A114887 A069085 this_sequence A005820 A052787 A052769
dead
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