I took the index in the words, transformed the range to binary, included 3 zeros, calculated the sha256 digest, took the main Component of the hexadecimal to transform it to binary, additional three zeros for the eight digits of your binary and acquired 00000010011 which interprets to 19 in decimal. https://todaybookmarks.com/story18972027/new-step-by-step-map-for-ledger-seed-phrase-bip39