2, 4, 2, 6, 12, 2, 8, 30, 28, 2, 10, 56, 126, 60, 2, 12, 90, 344, 462, 124, 2, 14, 132, 730, 1880, 1566, 252, 2, 16, 182, 1332, 5370, 9368, 5070, 508, 2, 18, 240, 2198, 12372, 36250, 43736, 15966, 1020, 2, 20, 306, 3376, 24710, 106452, 228090, 195224, 49422, 2044, 2