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A113526
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Define the first two terms to be 1 and 3. All the other terms are obtained by concatenating the two previous terms.
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1
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1, 3, 13, 313, 13313, 31313313, 1331331313313, 313133131331331313313, 1331331313313313133131331331313313, 3131331313313313133131331331313313313133131331331313313
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| The third term is 13 which is obtained by concatenating the two previous terms 1 and 3.
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MATHEMATICA
| a[1] = 1; a[2] = 3; a[n_] := FromDigits@ Join[IntegerDigits@a[n - 2], IntegerDigits@a[n - 1]]; Array[a, 10] (* Robert G. Wilson v *)
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CROSSREFS
| Cf. A008352.
Sequence in context: A100524 A000859 A045748 * A180654 A156358 A066266
Adjacent sequences: A113523 A113524 A113525 * A113527 A113528 A113529
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KEYWORD
| base,nonn
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 12 2006
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EXTENSIONS
| More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Jan 18 2006
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