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Search: id:A109842
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| A109842 |
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Number of consecutive integers starting with n needed to sum to a palindrome. |
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+0
2
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| 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 34, 12, 6, 4, 2, 11, 12, 16, 7, 3, 1, 8, 9, 19, 6, 2, 8, 12, 15, 14, 3, 1, 12, 22, 3, 70, 2, 11, 22, 33, 9, 16, 1, 12, 3, 8, 6, 2, 2, 10, 8, 6, 4, 1, 3, 8, 6, 4, 2, 9, 11, 6, 4, 2, 1, 13, 33, 4, 2, 13, 7, 3, 29, 2, 8, 1, 32, 9, 2, 8, 7, 3, 11, 2, 11, 44, 1, 77, 2, 50
(list; graph; listen)
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OFFSET
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1,10
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COMMENT
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Here are the records ( n:a(n) ) - 1:1, 10:3, 12:34, 37:70, 89:77, 94:144, 123:273, 214:838, 244:2149, 326:2347, 365:11264, 1359:23099, 1427:30610, 3272:118846, 3572:136719,
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EXAMPLE
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a(14)=6 because 14 + 15 + 16 + 17 + 18 + 19 = 99, 6 terms are needed.
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CROSSREFS
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Cf. A109841.
Sequence in context: A047815 A095844 A113110 this_sequence A103242 A050817 A125082
Adjacent sequences: A109839 A109840 A109841 this_sequence A109843 A109844 A109845
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KEYWORD
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base,easy,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Jul 05 2005
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