This is the only sequence with a common difference, hence the only arithmetic sequence: 22, 28, 34, 40 (common difference of 6).
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When adjacent terms of the sequence have the same <em>difference</em>, the sequence is <em>arithmetic</em>. When adjacent terms have the same <em>ratio</em>, the sequence is <em>geometric</em>. (Only a non-zero constant sequence will be both.)