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Search: id:A072434
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| A072434 |
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Numbers n for which there are exactly ten k such that n = k + reverse(k). |
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+0
1
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| 1111, 1991, 2442, 3542, 5115, 6875, 11011, 14124, 15884, 17457, 18557, 19008, 19091, 19291, 19491, 19691, 19891, 20091, 20291, 20491, 20691, 20891, 24042, 24242, 24442, 24642, 24842, 25042, 25242, 25442, 25642, 25842, 34142, 34342
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Subsequence of A067030. First term is A072041(10).
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LINKS
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Index entries for sequences related to Reverse and Add!
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EXAMPLE
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2442 = k + reverse(k) for k = 1041, 1131, 1221, 1311, 1401, 2040, 2130, 2220, 2310, 2400.
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PROGRAM
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(ARIBAS) var n, k, c, i, rev: integer; st, nst: string; end; m := 10; for n := 0 to 35000 do k := n div 2; c := 0; while k <= n and c < m + 1 do st := itoa(k); nst := ""; for i := 0 to length(st) - 1 do nst := concat(st[i], nst); end; rev := atoi(nst); if n = k + rev then inc(c); if k mod 10 <> 0 and k <> rev then inc(c); end; end; inc(k); end; if c = m then write(n, ", "); end; end;
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CROSSREFS
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Cf. A067030, A072041.
Sequence in context: A036103 A086887 A100846 this_sequence A033285 A085109 A074843
Adjacent sequences: A072431 A072432 A072433 this_sequence A072435 A072436 A072437
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KEYWORD
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base,nonn
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 17 2002
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