npub1z2sma9qu0mjgwhw536w8ppxsgapw639pxj307m56kldhzc2hrgdq46ehpf (npub1z2s…ehpf) Yup, -n means characters don't get cut if you can avoid doing so with decrementing the low part of the range (and decrementing high but no lower than low).
Instead coreutils just ignores -n.