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Search: id:A081932
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| 1, 33, 333, 4664, 51005, 616506, 7021007, 80308008, 900360009, 10004950010, 110005510011
(list; graph; listen)
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OFFSET
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1,2
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MAPLE
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isA002113 := proc(n) local digrev, d ; digrev := convert(n, base, 10) ; for d from 1 to nops(digrev)/2 do if op(d, digrev) <> op(-d, digrev) then RETURN(false) ; fi ; od ; RETURN(true) ; end: A081930 := proc(n) local a, k ; a := [] ; k := 10^(n-1) ; while nops(a) < n do if isA002113(k) then a := [op(a), k] ; fi ; k := k+1 ; od ; RETURN(a) ; end: A081932 := proc(n) local nrow, i ; nrow := A081930(n) ; add(op(i, nrow), i=1..nops(nrow)) ; end: for n from 1 to 18 do A081932(n) ; od ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 05 2007
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CROSSREFS
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Cf. A081930, A081931.
Sequence in context: A023874 A020291 A024400 this_sequence A121994 A093743 A085742
Adjacent sequences: A081929 A081930 A081931 this_sequence A081933 A081934 A081935
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KEYWORD
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base,more,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 01 2003
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 05 2007
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