300 (number) and strictly non-palindromic number. 361 = 19, centered triangular number, centered octagonal number, centered decagonal number, member of the Mian–Chowla sequence; also the number of positions on a standard 19 x 19 Go board. The Bahá'í calendar is based on 19 months of 19 days each. 362 = 2 × 181, Mertens function returns 0, nontotient, noncototient. 363 = 3 × 11, sum of nine consecutive primes (23 + 29 + 31 + 37 + 41 + 43 + 47 + 53 + 59), Mertens function returns 0, perfect totient number. 364 = 2 × 7 × 13, tetrahedral number,
Chess on a Really Big Board ranks. Once both players are satisfied with their arrangement (this can be enforced with a timer), the screen is removed and normal play resumes. It would also be possible to play without the screen, which Betza called "Sighted Viennese Kriegspiel". A further possibility Betza entertained was a 3D version of Chess on a Really Big Board on a 16×16×16 board, which brought its inspiration full circle. On each level, the 2D setup would be repeated, and the pieces' moves would be translated into three dimensions just as in his idea of 8×8×8 3D chess. Nevertheless, he commented on it: "What