Manasara 45.21

45.21

ekaviśāṅgulamārabhya dvidvyaṅgulavivardhanāt
saptatriṃśāṅgulāntaṃ syādvijayāsanaṃ vismṛtam

Beginning with twenty-one digits and increasing by two digits each time, / up to thirty-seven digits, is known as the vijayāsana.