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A046447 Apart from initial term, composite numbers with property that concatenation of prime factors is a palindrome. +0
11
1, 4, 8, 9, 16, 25, 27, 32, 39, 49, 64, 69, 81, 119, 121, 125, 128, 129, 159, 219, 243, 249, 256, 259, 329, 339, 343, 403, 429, 469, 507, 512, 625, 669, 679, 729, 795, 1024, 1207, 1309, 1329, 1331, 1533, 1547, 1587, 1589, 1703, 2023, 2048, 2097, 2187, 2319 (list; graph; listen)
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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