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Search: id:A113168
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| A113168 |
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Sum of digits of first n palindromes. |
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+0
1
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| 0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 47, 51, 57, 65, 75, 87, 101, 117, 135, 137, 140, 144, 149, 155, 162, 170, 179, 189, 200, 204, 209, 215, 222, 230, 239, 249, 260, 272, 285, 291, 298, 306, 315, 325, 336, 348, 361, 375, 390, 398, 407, 417, 428, 440, 453, 467
(list; graph; listen)
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OFFSET
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1,3
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EXAMPLE
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First twelve base 10 palindromes are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22. Sum of their digits is 0+1+2+3+4+5+6+7+8+9+1+1+2+2 = 51, hence a(12) = 51.
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CROSSREFS
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Sequence in context: A109453 A037123 A062918 this_sequence A071817 A033442 A105335
Adjacent sequences: A113165 A113166 A113167 this_sequence A113169 A113170 A113171
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KEYWORD
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nonn,base
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jan 06 2006
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EXTENSIONS
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Edited and extended by Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jan 06 2006
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