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%I #7 Oct 27 2020 00:25:36
%S 0,0,0,1,2,12,53,250,1115,5012,22032,96746,422732,1848128,8088090,
%T 35498533,156328706,691192578,3068780449,13683070474,61267204610,
%U 275455737555,1243320744572,5633022679582,25611815936218,116840427373176,534705818846660,2454282243059471
%N Number of branched catafusenes with n condensed hexagons.
%D F. Harary and R. C. Read, The Enumeration of Tree-like Polyhexes, Proc. Edinburgh Math. Soc., Series II, 17 (1970), pp. 1-13.
%D Alexandru T. Balaban, The Enumeration of Cyclic Graphs, pp. 63-105 of A. T. Balaban, ed., Chemical Applications of Graph Theory, Ac. Press, 1976; see p. 75.
%F a(n) = A002216(n) - A001998(n-2) with A001998(-1)=1. - _Sean A. Irvine_, Oct 26 2020
%Y Cf. A036359, A002216, A005963, A000228, A001998.
%K nonn
%O 1,5
%A _N. J. A. Sloane_.
%E More terms from _Sean A. Irvine_, Oct 26 2020
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