%I
%S 8,12,54,258280326
%N a(n) = largest number k >= 7 such that A212813(k) = n.
%C Bellamy and Cadogan say that a(4) = 2*3^86093441, which is too large to include here.
%D Bellamy, O. S.; Cadogan, C. C. Subsets of positive integers: their cardinality and maximality properties. Proceedings of the Tenth Southeastern Conference on Combinatorics, Graph Theory and Computing (Florida Atlantic Univ., Boca Raton, Fla., 1979), pp. 167178, Congress. Numer., XXIIIXXIV, Utilitas Math., Winnipeg, Man., 1979. MR0561043 (82b:10006)
%Y Cf. A036288, A212813, A212814, A212816, A212908, A212909.
%K nonn
%O 0,1
%A _N. J. A. Sloane_, May 30 2012
