First gap of length at least n in A136110, lower end.

Terms

a(0) =1a(1) =9a(2) =18a(3) =38a(4) =98a(5) =384a(6) =2580a(7) =2580a(8) =2580a(9) =2580a(10) =2580a(11) =367574a(12) =721449a(13) =3879720a(14) =3879720a(15) =53671968a(16) =53671968a(17) =223610114