<div  v-for="(m, ind) in arrayMeses" :key="ind" v-if="m" class="mes">
    <table border="1" width="100%">
        <tbody>
            <tr class="mes_title">
                <td colspan="7" class="mes_title font-14">
                    {{ m }} - {{ testeComputed(ind) }}
                </td>
            </tr>
        </tboddy>
    </table>

computed: {
     testeComputed: function(ind) {
         console.log('m',ind)
         return 'teste' + ind
     },
 },