[sampo]

The blog means two different sequences of jumps. The sequence of down-jumps begins from A. Then the sequence of up-jumps begins from A.

{jumps down: 1, jumps up: 5}

First, you start from A, and execute the down-jumps. In this case, there is only one. Then you start again from A (returning to A is not counted as a jump), and execute the up-jumps.

> Up two 7-semitone steps and down four gives you A minor.

Up-jump sequence: A, up to E, up to B.

Down-jump sequence: A, down to D, down to G, down to C, down to F.

Sort: A B C D E F G

I don't know what's behind this idea, or how useful it is. It seems to work, though. But I think there are simpler ways to construct the scales. Or just memorize them.