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Search: id:A068665
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| A068665 |
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a(1) = 3; a(n) = smallest palindromic multiple of a(n-1). |
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+0
10
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| 3, 6, 66, 858, 6006, 66066, 858858, 222444222, 444888444, 21354645312, 21375999957312, 211643775577346112, 211432343445544343234112, 21354666687999978666645312, 211432554877887788778455234112
(list; graph; listen)
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OFFSET
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1,1
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MATHEMATICA
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a[1] = 3; a[n_] := a[n] = Block[{k = 2}, While[k*a[n - 1] != ToExpression[ StringReverse[ ToString[k*a[n - 1]]]], k++ ]; k*a[n - 1]]; Table[a[n], {n, 1, 16}]
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CROSSREFS
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Cf. A068664, A068666, A068667, A068668, A070069, A068971, A068972, A068973, A068974.
Sequence in context: A069077 A076551 A127637 this_sequence A050722 A069502 A023174
Adjacent sequences: A068662 A068663 A068664 this_sequence A068666 A068667 A068668
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 01 2002.
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EXTENSIONS
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More terms from David W. Wilson (davidwwilson(AT)comcast.net); edited by Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 30 2002.
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