The Vermeil comma (Monzo: [—136; -34; 0; 68⟩), is an interval of 13.691 cents which is the amount by which thirty-four 49/48’s exceed an octave, (2/(49/48)^34). It is a 7-limit small comma.
It is best approximated by 44EDO, with 1 EDOstep = 13.581c.