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，其中 
是第 
個 三角形數。 前幾個是 2, 6, 12, 20, 30, 42, 56, 72, 90, 110, ... (OEIS A002378)。 pronic 數的 生成函式 是
(Dickson 2005, Vol. 1, p. 357; Vol. 2, p. 233)。
和 
，唯一的 pronic 盧卡斯數是 
，重新發現了 Ming (1995) 首次發表的結果。
使得 
是 迴文數 的是 1, 2, 16, 77, 538, 1621, ... (OEIS A028336)，前幾個是 pronic 數的 迴文數 是 2, 6, 272, 6006, 289982, ... (OEIS A028337)。