Table[Length@IntegerPartitions[2 n, {2}, Prime[Range[PrimePi[2 n]]]], {n, 3, 166}]
{1, 1, 2, 1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 2, 4, 4, 2, 3, 4, 3, 4, 5, 4, 3, 5, 3, 4, 6, 3, 5, 6, 2, 5, 6, 5, 5, 7, 4, 5, 8, 5, 4, 9, 4, 5, 7, 3, 6, 8, 5, 6, 8, 6, 7, 10, 6, 6, 12, 4, 5, 10, 3, 7, 9, 6, 5, 8, 7, 8, 11, 6, 5, 12, 4, 8, 11, 5, 8, 10, 5, 6, 13, 9, 6, 11, 7, 7, 14, 6,
8, 13, 5, 8, 11, 7, 9, 13, 8, 9, 14, 7, 7, 19, 6, 8, 13, 7, 9, 11, 7, 7, 12, 9, 7, 15, 9, 9, 18, 8, 9, 16, 6, 9, 16, 9, 8, 14, 10, 9, 16, 8, 9, 19, 7, 11, 16, 7, 14, 16, 8, 12, 17, 10, 8, 19, 8, 11, 21, 9, 10, 15, 8, 12, 17, 9, 10, 15, 11, 11, 20, 7, 10, 24, 6}
Table[Length@IntegerPartitions[2 n, {2}, Prime[Range[PrimePi[2 n]]]], {n, 496, 496}]
{13}——注:496×2=992——偶数992有13组解。—— (* Oliver Seipel, Oct 26 2025 创立 *)
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