int8_t fullTriangle[256] = {
  0, 1, 3, 5, 7, 9, 11, 13,
  15, 17, 19, 21, 23, 25, 27, 29,
  31, 33, 35, 37, 39, 41, 43, 45,
  47, 49, 51, 53, 55, 57, 59, 61,
  63, 65, 67, 69, 71, 73, 75, 77,
  79, 81, 83, 85, 87, 89, 91, 93,
  95, 97, 99, 101, 103, 105, 107, 109,
  111, 113, 115, 117, 119, 121, 123, 125,
  127, 125, 123, 121, 119, 117, 115, 113,
  111, 109, 107, 105, 103, 101, 99, 97,
  95, 93, 91, 89, 87, 85, 83, 81,
  79, 77, 75, 73, 71, 69, 67, 65,
  63, 61, 59, 57, 55, 53, 51, 49,
  47, 45, 43, 41, 39, 37, 35, 33,
  31, 29, 27, 25, 23, 21, 19, 17,
  15, 13, 11, 9, 7, 5, 3, 1,
  0, -2, -4, -6, -8, -10, -12, -14,
  -16, -18, -20, -22, -24, -26, -28, -30,
  -32, -34, -36, -38, -40, -42, -44, -46,
  -48, -50, -52, -54, -56, -58, -60, -62,
  -64, -66, -68, -70, -72, -74, -76, -78,
  -80, -82, -84, -86, -88, -90, -92, -94,
  -96, -98, -100, -102, -104, -106, -108, -110,
  -112, -114, -116, -118, -120, -122, -124, -126,
  -128, -126, -124, -122, -120, -118, -116, -114,
  -112, -110, -108, -106, -104, -102, -100, -98,
  -96, -94, -92, -90, -88, -86, -84, -82,
  -80, -78, -76, -74, -72, -70, -68, -66,
  -64, -62, -60, -58, -56, -54, -52, -50,
  -48, -46, -44, -42, -40, -38, -36, -34,
  -32, -30, -28, -26, -24, -22, -20, -18,
  -16, -14, -12, -10, -8, -6, -4, -2
};