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A058848
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Numbers k such that the sum of the first k odd composites is palindromic.
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4
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1, 12, 25, 61, 108, 211, 1344, 2339, 10539, 78409, 283181, 1748747, 1795423, 2386702, 2819089, 179101605, 1923088106, 2822581688, 7794689270, 17381011919, 25635268093, 28780043265, 97973526253
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OFFSET
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1,2
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COMMENTS
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Sequence is 9 + 15 + 21 + 25 + 27 + 33 + ... + z. For values of z see A058849.
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LINKS
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Table of n, a(n) for n=1..23.
Patrick De Geest, Palindromic Sums
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CROSSREFS
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Cf. A058849, A058850, A262044.
Sequence in context: A229447 A175523 A280391 * A292493 A042869 A041282
Adjacent sequences: A058845 A058846 A058847 * A058849 A058850 A058851
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KEYWORD
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nonn,base,more
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AUTHOR
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Patrick De Geest, Dec 15 2000
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EXTENSIONS
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a(20) from Donovan Johnson, Sep 01 2012
a(21)-a(23) from Chai Wah Wu, Dec 06 2019
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STATUS
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approved
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