What is the next number in the series 25 28 24 27 23 26 22?

The pattern appears to be that n1 is defined as 25; n2 = n1 + 3; n3 = n2 - 4 = n1 - 1. If this is the pattern, the next number would be 25. If this is the pattern, the series would repeat endlessly: 25, 28, 24, 27,23, 26, 22, 25, , 28, 24, 27,23, 26, 22, ...