Logassa Sutra is a prayer that venerates all 24 Tirthankaras. The names of the 24 Tirthankaras appear in the Logassa text in order, starting with Rishabhanath and ending with Mahavira. Here are the 24 names as recited in Logassa (Śvetāmbara tradition):

1) Rishabhanath (Adinath) 2) Ajitnath 3) Sambhavnath 4) Abhinandan 5) Sumatinath 6) Padmaprabha 7) Suparshva 8) Chandraprabha 9) Suvidhinath (Pushpadanta) 10) Shitalnath 11) Shreyansanath 12) Vasupujya 13) Vimala 14) Anantanath 15) Dharmanath 16) Shantinath 17) Kunthunath 18) Mallinath 19) Munisuvratinath 20) Naminath 21) Neminath 22) Parshvanath 23) Vardhaman Mahavira 24) (end) — Mahavira is the final one listed above; some recensions place the final companion names slightly differently, but the above 23 plus Mahavira form the canonical 24.

What you asked—“Where is 24 tirthankar name in logossa”—is addressed by the Logassa Sutra itself, which names all 24 Tirthankaras within its verses. You can read the full Logassa Sutra and its listing of the Tirthankaras in the source text in Logassa.

You can read more here and the connected logassa page with text and meaning .