> Try 148012 :)

This should do 

my $regex = qr/ \d (??{ substr($&, -1) + 1 }) + /x;

"148012" =~ $regex;

print ">$&<"

__END__
>012<

[download]

The minimal length of the sequence can be set by {x,} instead of the + quantifier. ¹

Cheers Rolf
(addicted to the Perl Programming Language and ☆☆☆☆ :)
Je suis Charlie!

¹) with x = min-1

In reply to Re^3: Regex to match ascending sequence by LanX
in thread Regex to match ascending sequence by ExReg

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