I took the index with the words, converted the number to binary, additional a few zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to transform it to binary, extra three zeros into the 8 digits of your binary and acquired 00000010011 which interprets to 19 in https://onelifesocial.com/story4153219/helping-the-others-realize-the-advantages-of-bip39-seed-phrase-mnemonics-generator