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By N. J. A. Sloane

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PSPM 19 172 71. 102 1, 2, 2, 3, 4, 5, 7, 9, 12, 16, 21, 28, 37, 49, 65, 86, 114, 151, 200, 265, 351, 465, 616, 816, 1081, 1432, 1897, 2513, 3329, 4410, 5842, 7739, 10252, 13581, 17991, 23833 A(N) = A(N - 2) + A(N - 3). REF JA2 90. MMAG 41 17 68. 103 1, 2, 2, 3, 4, 6, 9, 14, 22, 35, 56, 90, 145, 234, 378, 611, 988, 1598, 2585, 4182, 6766, 10947, 17712, 28658, 46369, 75026, 121394, 196419, 317812, 514230, 832041 FIBONACCI NUMBERS + 1. REF JA2 97. 104 1 , 2 , 2 , 3 , 5 , 6 , 9 , 13, 14, 15,20 RELATED TO ZARANKIEWICZS PROBLEM.

REF MTAC 20 560 66. 50 1,2,3,5, 11,47,923, ...

220 1 , 2 , 3 , 5 , 6 , 5 , 8 , 9 , 11, 10,7, 15, 15, 14, 17,24,24,21, 13, 19,27,25,29,26,44, 44, 29, 46, 39, 46, 27, 42, 47, 47, 54, 35, 41, 60, 51, 37, 48, 45, 49, 50, 49, 53 NUMBERS WITH INTEGRAL HARMONIC MEAN. REF AMM 61 95 54. 221 1 , 2 , 3 , 5 , 6 , 6 , 6 , 7 , 8 , 10, 13, 13, 13, 14, 17, 17, 17, 18, 1 9 , 2 0 , 2 2 , 2 3 , 2 7 , 2 9 , 2 9 , 29, 31, 32, 35, 36, 37, 40, 43, 46, 48, 50, 53, 55, 57, 60, 60, 61, 63, 66, 66, 68, 71, 74, 77 LATTICE POINTS IN CIRCLES. REF MTAC 20 306 66. 222 1 , 2 , 3 , 5 , 6 , 7 , 2 , 1 0 , 11,3, 13, 14, 15, 17,2, 19,5,21,22,23,6,26,3,7,29,30, 31,2,33,34,35,37,38,39, 10,41,42,43, 11, 5 , 4 6 , 4 7 , 3 , 2 , 5 1 , 13,53,6,55, 14,57,58 REMOVE SQUARES FROM N.

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