35906domain: NAppears in sequencesa(n) = sum of numbers without digit 1 and with product of digits = n-th 7-smooth number.at n=22A130975Number of length 3 arrays x(i), i=1..3 with x(i) in i..i+n and no value appearing more than 2 times.at n=31A250352a(n) = (A022010(n) - 179)/210.at n=7A357889