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A115657
Both n and the reverse of n are pentagonal numbers (
A000326
).
+0
1
1, 5, 22, 210, 287, 782, 1001, 2882, 7740, 15251, 77180, 565187, 720027, 781565, 7081807, 7451547, 26811862, 54177145, 206489067, 246214610, 760984602, 1050660501, 1085885801, 1528888251, 2642326276, 2911771192, 6726232462
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Maintained by
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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.
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