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. 2023 Feb 3;19(4):1218–1230. doi: 10.1021/acs.jctc.2c01132

Figure 1.

Figure 1

Generic genealogical branching diagram for up to 9 electrons (Ne). The node weights represent the number of paths starting from the root node, (Ne, Stot) = (0, 0) to reach the targeted node. This number is given by the van Vleck–Sherman formula, eq 13.