3128, 3130, 3130, 3131,
That seems to be starting with the sequence of integers:
3128, 3129, 3130, 3131, 3132, 3133, 3134, 3135, 3136,...
Grouping them into threes:
(3128, 3129, 3130), (3131, 3132, 3133), (3134, 3135, 3136)...
and adding 1 to the middle number of each group
(3128, 3129, 3130), (3131, 3132, 3133), (3134, 3135, 3136),...
+1 +1 +1
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(3128, 3130, 3130), (3131, 3133, 3133), (3134, 3136, 3136),...
==========================================================
3, 1, 2, 3, 2, 4, 5, 6, ?, ?,
Put in some parentheses and question marks:
3, (1, 2, 3), 2, (4, 5, 6), ?, (?, ?, ?), ?, (?, ?, ?), ...
Extend the pattern (in red):
3, (1, 2, 3), 2, (4, 5, 6), 1, (7, 8, 9), 0, (10, 11, 12), ...
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F, P, N, ?, M,
I have no idea. Sorry!
Edwin
