Wish I could see my entries and edit.

Seeing missing divisions by 2, factors with 10 pair cables, rest jumper blocks:

26*25/2 * 24*23/2 * 22*21/2 * ... * 10*9/2 * 8*7/2 = 26!/(6! * 2^10) = 546.999 * 10^18 ish.

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