I took the index in the words, transformed the quantity to binary, extra three zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to transform it to binary, additional 3 zeros to the 8 digits on the binary and obtained 00000010011 which translates to 19 in decimal. http://mariobrpx591.cavandoragh.org/creating-your-copyright-safeguard-exactly-how-to-utilize-the-ian-coleman-bip39-generator-for-secure-budgets