Manasara 45.19

45.19

tatsamenādhikaṃ vāpi trividhaṃ cāyataṃ tathā
saptadaśāṅgulādau syād dvidvyaḍalavivardhanāt

or greater by an equal amount; the length is thus threefold. / Beginning with seventeen digits and increasing by two digits each time,