103401

Appears in sequences

• Number of compositions of n where the difference between largest and smallest parts equals 9 and adjacent parts are unequal.at n=18A214278
• a(n) is the least k such that, if x_0, x_1, x_2, ... are the iterations of the arithmetic derivative A003415 starting with x_0 = k, x_0 > x_1 > ... > x_n.at n=17A363373