for i = 0, 31*ATTR_RANGE-1 do
kcat_attr_table[i] = luatexbase.attributes['ltj@kcat'..floor(i/31)]
pow_table[i] = pow(2, i%31)
for i = 0, 31*ATTR_RANGE-1 do
kcat_attr_table[i] = luatexbase.attributes['ltj@kcat'..floor(i/31)]
pow_table[i] = pow(2, i%31)