I took the index in the words, converted the amount to binary, additional 3 zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, added three zeros for the 8 digits with the binary and acquired 00000010011 which interprets to 19 in decimal. http://rylanmecp341.wpsuo.com/from-words-to-wide-range-exactly-how-to-efficiently-make-use-of-bip39-passphrases-for-your-copyright-pocketbooks