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a(n) = least positive integer > a(n-1) and not a(i)+a(j)-a(k) for distinct i,j,k < n.
Klaus Brockhaus and Dan Hoey, Table of n, a(n) for n = 1..2839
Index entries for B_2 sequences.
a(n) = A010672(n-1)+1.
Cf. A033627, A003278, A026471, A075122, A075123, A133097.
Sequence in context: A080787 A065124 A048817 * A240733 A278800 A055806
Adjacent sequences: A011182 A011183 A011184 * A011186 A011187 A011188