HRECURSE instead of MAKEARRAY, recursing LAMBDA

Sorry, did not have much time yesterday. Here another annotated stab:

=LET(
	' Initializing Row 0 - the start-up row - however you need it. I only do 2 colums here.
	R0; {1\2};

	' This the equivalent to VRECURSE, iterating 10 times
	REDUCE(R0;SEQUENCE(10); 

		' This is your Lambda.  It receives the evolving results as "tbl" and the heartbeat "i"
		LAMBDA(tbl;i; LET(

			' Since R0 is in tbl(1), tbl(i) is actually row i-1.  But you can access any previous row.
			Ri_1; INDEX(tbl;i;0);

			' Do your thing.  It will be more meaningful than my thing and
			' probably involve HSTACK(c1,c2,...,cn) :)
			Ri; Ri_1+1;

			' Append your result row "Ri" to the "tbl"
			VSTACK(tbl;Ri)
		))
	)
)

You were working in a vertical layout (using VRECURSE)? So your code replaces the HSTACK in my example. The HSTACK contributes one row to the output table (in the same way you would have deployed HSTACK in my VRECURSE, too).  As many as you like. The SEQUENCE provides the heartbeat, counting from 1..10. You would use "this" to index whatever source array you are processing into the multiple columns. "prev" is the output table that progressively gets larger (one row at a time). My VRECURSE only offered access to INDEX(prev;this-1;0). But with reduce, you can also access the row this-2, -3 ... as you asked (as I understood you).

PS:  May be I should have called "prev" -> "tbl" and "this" -> "i".