%I #12 Jan 31 2017 10:21:38
%S 1,2,3,7,17,52,217,1757,35977,3244071,2757063867,68246203026923,
%T 265773420092483210413,2042495276699414186047172525299,
%U 1376053548027595532701211092865247287361883459,24062832323766390460579042386921003503968575947499150009246321293279
%N Index of first appearance of n in the triangular-based nachos numbers A281367.
%C Using a similar computation as in A280054. - _Lars Blomberg_, Jan 31 2017
%H Lars Blomberg, <a href="/A281368/b281368.txt">Table of n, a(n) for n = 1..22</a>
%Y Cf. A280053, A280054, A281367.
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Jan 30 2017
%E More terms from _Lars Blomberg_, Jan 31 2017