28wtn

A 28 tone well tempered nonet (28WTN) is related to well temperaments of 24edo, but with a nonet rather than the 2/1 being constant. Its patent tunings optimally alternate division of the just perfect fifth into 14 equal parts (14EDF) with sequences of fourteen equal steps of 42.8571 to 57.1429 cents each. This will create fourteen equally-spaced intervals between an interval between 600 and 800 cents and the just perfect fifth.

Patent Intervals

	Target	Alternating edo and *ed(9/8)
1	50.1396	50
2	100.2793	100
3	150.4189	150
4	200.5586	200
5	250.6982	250
6	300.8379	300
7	350.9775	350
8	401.1171	400
9	451.2568	450
10	501.3964	500
11	551.536	550
12	601.6757	600
13	651.8154	650
14	701.955	700
15	751.7595	750
16	801.564	800
17	851.3685	850
18	901.173	900
19	950.9775	950
20	1000.782	1000
21	1050.6865	1050
22	1100.391	1100
23	1150.1955	1150
24	1200	1200.000
25	1249.8045	1250.9775
26	1299.609	1301.955
27	1349.4135	1352.9325
28	1399.218	1403.91

Todo: clarify, unify precision
"Target a" and "Target b" are not self-explanatory, how are the values calculated?