I took the index on the words, transformed the amount to binary, included three zeros, calculated the sha256 digest, took the primary Element of the hexadecimal to transform it to binary, additional 3 zeros for the 8 digits with the binary and received 00000010011 which interprets to 19 in decimal. https://bookmarkangaroo.com/story18916836/new-step-by-step-map-for-ledger-seed-phrase-bip39