The Tikkunim of the Sephirot are combined in pairs, which represents a "re-grouping" in terms of the Partzufim:
10! + 15^2 = (15*127)^2
14! + 420^2 = (420*703)^2
Note that 420 = 15*28. This corresponds to the year 5786.
Further:
11! + 18^2 = (18*351)^2
13! + 288^2 = (288*274)^2
Note that 288 = 18*16. This corresponds to the year 5790.
Finally:
15! + 464^2 = 1143536^2
16! + (4*464)^2 = (4*1143536)^2
Note that 464 = 16*29. This corresponds to the year 5796.
