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A083147 a(1) = 1, a(n) = smallest nontrivial palindromic multiple of a(n-1). a(n) is not equal to a(n-1) or a concatenation of a(n-1) with itself. 6
1, 2, 4, 8, 232, 464, 42224, 84448, 4053504, 44588544, 4057557504, 4053504004053504, 44588544044588544, 4057557508057557504, 401341233733484337332143104, 40130110362352332623325326301103104, 441431213985875658856578589312134144 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Giovanni Resta, Table of n, a(n) for n = 1..19

P. De Geest, WONplate 36

CROSSREFS

Cf. A083148, A068664, A083149, A083151, A083153, A083155.

Sequence in context: A203630 A265595 A133036 * A012648 A130133 A033555

Adjacent sequences:  A083144 A083145 A083146 * A083148 A083149 A083150

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003

EXTENSIONS

More terms from Patrick De Geest, Jun 05 2003

a(17) from Giovanni Resta, Sep 25 2019

STATUS

approved

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Last modified November 29 18:41 EST 2021. Contains 349416 sequences. (Running on oeis4.)