I took the index from the words, transformed the amount to binary, additional three zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to transform it to binary, extra a few zeros towards the eight digits with the binary and obtained 00000010011 which translates to 19 https://macrobookmarks.com/story18946227/ledger-seed-phrase-bip39-no-further-a-mystery