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Search: id:A072435
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| A072435 |
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Numbers n for which there are exactly twelve k such that n = k + reverse(k). |
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+0
1
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| 2552, 3333, 3432, 4224, 4653, 5764, 6116, 7876, 13123, 14883, 15235, 16346, 16775, 17567, 17666, 18447, 25052, 25252, 25452, 25652, 25852, 26052, 26252, 26452, 26652, 26852, 33033, 33132, 33233, 33332, 33433, 33532, 33633, 33732, 33833
(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(12).
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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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2552 = k + reverse(k) for k = 1051, 1141, 1231, 1321, 1411, 1501, 2050, 2140, 2230, 2320, 2410, 2500.
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PROGRAM
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(ARIBAS) var n, k, c, i, rev: integer; st, nst: string; end; m := 12; for n := 0 to 34200 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: A111729 A135924 A035876 this_sequence A050413 A050544 A125492
Adjacent sequences: A072432 A072433 A072434 this_sequence A072436 A072437 A072438
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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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