I took the index with the words, converted the range to binary, included 3 zeros, calculated the sha256 digest, took the 1st Portion of the hexadecimal to transform it to binary, added a few zeros into the 8 digits on the binary and received 00000010011 which translates to 19 in https://todaybookmarks.com/story18972027/new-step-by-step-map-for-ledger-seed-phrase-bip39