( n, k, d) Just the check bits; append an identity matrix for data bits
(19, 1,19)  0x000000000003ffff  0000000000000000000000000000000000000000000000111111111111111111
(29, 2,19)  0x0000000007fc01ff  0000000000000000000000000000000000000111111111000000000111111111
(34, 3,19)  0x00000000787c3e0f  0000000000000000000000000000000001111000011111000011111000001111
(37, 4,19)  0x00000001999cce71  0000000000000000000000000000000110011001100111001100111001110001
(39, 5,19)  0x00000002aaad56b6  0000000000000000000000000000001010101010101011010101011010110110
(41, 6,19)  0x00000004b34dab92  0000000000000000000000000000010010110011010011011010101110010010
(42, 7,19)  0x0000000744d6d4b5  0000000000000000000000000000011101000100110101101101010010110101
(44, 8,19)  0x00000008be1662dc  0000000000000000000000000000100010111110000101100110001011011100
(46, 9,19)  0x000000114f19b83a  0000000000000000000000000001000101001111000110011011100000111010
(48,10,19)  0x00000021cd4562a7  0000000000000000000000000010000111001101010001010110001010100111
(49,11,19)  0x0000003a052e6792  0000000000000000000000000011101000000101001011100110011110010010
(51,12,19)  0x0000004beb7231c0  0000000000000000000000000100101111101011011100100011000111000000
(53,13,19)  0x000000949a7af1c7  0000000000000000000000001001010010011010011110101111000111000111
(54,14,19)  0x000000e71bfa4972  0000000000000000000000001110011100011011111110100100100101110010
(56,15,19)  0x000001502c7254ee  0000000000000000000000010101000000101100011100100101010011101110