I took the index on the words, converted the amount to binary, included a few zeros, calculated the sha256 digest, took the first Component of the hexadecimal to convert it to binary, extra three zeros for the eight digits from the binary and received 00000010011 which interprets to 19 in https://leftbookmarks.com/story18911530/new-step-by-step-map-for-ledger-seed-phrase-bip39