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A005894 Centered tetrahedral numbers.
(Formerly M3850)
+0
19
1, 5, 15, 35, 69, 121, 195, 295, 425, 589, 791, 1035, 1325, 1665, 2059, 2511, 3025, 3605, 4255, 4979, 5781, 6665, 7635, 8695, 9849, 11101, 12455, 13915, 15485, 17169, 18971, 20895, 22945, 25125, 27439, 29891, 32485, 35225, 38115 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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