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The ultatri is equal to {3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3} (twenty-seven 3's) = {3,27 (1) 2} in BEAF,[1] or 27 & 3 using the array of operator. The term was coined by Jonathan Bowers.

Ultatri is approximately equal to $$f_{\omega^{25}}(3)$$ in the fast-growing hierarchy.

### Sources

1. Bowers, JonathanInfinity Scrapers. Retrieved January 2013.

Tritri series (repeating linear arrays)

3 entries: tritri · tritet · tripent · trisept · tridecal
4 entries: tetratri · supertet · general(plex) (tetradecal)
5-10 entries: pentatri · superpent · pentadecal(plex) · hexatri · superhex · hexadecal(plex) · heptatri · supersept · heptadecal · superoct · octadecal · superenn · ennadecal · iteral (superdecal)
Over 10 entries: ultatri · dupertri · duperdecal (iteralplex) · truperdecal · quadruperdecal

Tritri series: tritri · tritet · tripent · trisept · tridecal · grand tridecal
Tetratri series: tetratri · supertet · general(plex)
Pentatri series: pentatri · superpent · pentadecal(plex)
Hexatri series: hexatri · superhex · hexadecal(plex)
Heptatri series: heptatri · supersept · heptadecal
Iteral series: superoct · octadecal · superenn · ennadecal · iteral · ultatri
Dupertri series: dupertri · duperdecal · truperdecal · quadruperdecal
Latri series: latri · emperal(plex) · hyperal(plex) · admiral
Dutritri series: dutritri · dutridecal
Dimentri series: dimentri · dulatri · trilatri · trimentri
Triakulus series: triakulus · tridecatrix
Big boowa series: big boowa · great big boowa · grand boowa
Tiaokhiao's extensions: trihex · trioct · triennet · triundecal · tridodecal · tritriplex · tritriplexian · grand tritri · tetrapent · tetrahex · grand tetratri · octatri · enneatri · decatri · undecatri · dodecatri
RedBandServerYT's extensions: tridecalplex