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%I #5 Aug 15 2015 11:57:58
%S 4,14,60,310,1892,13374,107644,972710,9754500,107518702,1292197244,
%T 16818292374,235673103460,3537700674590,56637064388412,
%U 963304044932614,17346582063731204,329698807289999310,6595909863144795580,138548914038247276022,3048737440173364880484
%N A000522(n+2)-A000522(n).
%H J. L. Adams, <a href="/A000522/a000522_1.pdf">Conceptual Blockbusting: A Guide to Better Ideas</a>, Freeman, San Francisco, 1974. [Annotated scans of pages 69 and 70 only]
%Y Cf. A000522, A001339.
%K nonn
%O 0,1
%A _N. J. A. Sloane_, Jun 23 2015