# [Jelly], <s>&nbsp;37&nbsp;</s> 35 [bytes]

 ḤØ+ṗSÐḟÄAƑ$ƇµIHŻ⁸_Ä‘Ṭ€a"z0Ṛị“/\ ”)Ẏ

A monadic Link that accepts a positive integer and returns a list of lines.

**[Try it online!][TIO-mbap47gx]**

#### How?

 ḤØ+ṗSÐḟÄAƑ$ƇµIHŻ⁸_Ä‘Ṭ€a"z0Ṛị“/\ ”)Ẏ - Link: positive integer, N
 ḤØ+ṗ - [-1,1] Cartisian power 2N
 SÐḟ - discard those with non-zero sum
 ÄAƑ$Ƈ - keep only those with all non-negative cumulative sums
 µ ) - for each UpDownSeq in that:
 I - deltas of UpDownSeq -> [v2-v1, v3-v2, ...]
 H - halve
 Ż - prefix with a zero
 ⁸_ - subtract from UpDownSeq
 -> UpDownSeq with zeros replacing the first of each non-leading run of equal values
 Ä - cumulative sums
 ‘ - increment (this is here to add a trailing new line to each path representation)
 Ṭ€ - untruth each (e.g. 3 -> [0,0,1])
 a" - zipwise logical AND with UpDownSeq
 z0 - transpose with filler zero
 Ṛ - reverse
 ị“/\ ” - 1-index, cyclically into "/\ "
 Ẏ - tighten to a list of lines


[Jelly]: https://github.com/DennisMitchell/jelly
[bytes]: https://github.com/DennisMitchell/jelly/wiki/Code-page

[TIO-mbap47gx]: https://tio.run/##AVEArv9qZWxsef//4bikw5gr4bmXU8OQ4bifw4RBxpEkxofCtUlIxbvigbhfw4TigJjhuazigqxhInow4bma4buL4oCcL1wg4oCdKeG6jv/Dh1n//zU "Jelly – Try It Online"