A016969: a(n) = 6*n + 5

Residue counts:
2   [0, 1000001]
3   [0, 0, 1000001]
4   [0, 500001, 0, 500000]
5   [200001, 200000, 200000, 200000, 200000]
6   [0, 0, 0, 0, 0, 1000001]
7   [142857, 142857, 142857, 142857, 142858, 142858, 142857]
8   [0, 250000, 0, 250000, 0, 250001, 0, 250000]
9   [0, 0, 333334, 0, 0, 333334, 0, 0, 333333]
10   [0, 200000, 0, 200000, 0, 200001, 0, 200000, 0, 200000]
11   [90910, 90909, 90909, 90909, 90909, 90910, 90909, 90909, 90909, 90909, 90909]
12   [0, 0, 0, 0, 0, 500001, 0, 0, 0, 0, 0, 500000]

Numbers in the sequence are spaced 6 apart (13, 19, 25, 33...). Sound conists of the fundamental
frequency 7350Hz (44100/6) and a single harmonic 14700Hz (44100/3). These freqeuncies are both
3675Hz from half of the Nyquist frequency 11025Hz. Identical sound to periodic sequence a(n) = 6n.

-- Joeph Rafael