I took the index on the words, transformed the amount to binary, added three zeros, calculated the sha256 digest, took the primary Element of the hexadecimal to convert it to binary, extra three zeros on the eight digits in the binary and obtained 00000010011 which interprets to 19 in decimal. https://socialbaskets.com/story5064602/new-step-by-step-map-for-ledger-seed-phrase-bip39