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Fix thanks to Luis Mendo
-2 bytes thanks to Sanchises
@(a)[1;~~diff(dec2binde2bi(+aa,7)'(:)>48)]
Try it online!Try it online!
@(a)[1;~~diff(dec2bin(+a,7)'(:)>48)]
Try it online!
@(a)[1;~~diff(de2bi(a,7)'(:))]
@(a)[1;diff[1;~~diff(dec2bin(a+0+a,7)'(:)>48)!=0]]
@(a)[1;diff(dec2bin(a+0)'(:)>48)!=0]
