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A077404 Trajectory of n under the Reverse and Add! operation carried out in base 3 (presumably) does not reach a palindrome. 6
103, 127, 167, 176, 180, 183, 185, 191, 197, 200, 206, 207, 209, 215, 221, 230, 239, 291, 309, 318, 340, 358, 369, 376, 387, 394, 396, 413, 418, 431, 436, 449, 454, 467, 472, 582, 600, 618, 636, 655, 660, 673, 678, 691, 696, 709, 714, 746, 776, 803, 805 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Base-3 analog of A066059 (base 2), A075420 (base 4) and A023108 (base 10).

LINKS

A.H.M. Smeets, Table of n, a(n) for n = 1..20000

Index entries for sequences related to Reverse and Add!

PROG

(ARIBAS) m := 900; stop := 1000; for n := 0 to m do c := 0; k := n; b := 1; while b do d := k; rev := 0; while d > 0 do rev := 3*rev + (d mod 3); d := d div 3; end; if k = rev or c = stop then b := 0; else k := k + rev; end; inc(c); end; if c > stop then write(n, ", "); end; end;

CROSSREFS

Cf. A023108, A066059, A075420, A077405.

Sequence in context: A055628 A139643 A139957 * A139979 A146357 A252269

Adjacent sequences:  A077401 A077402 A077403 * A077405 A077406 A077407

KEYWORD

base,nonn

AUTHOR

Klaus Brockhaus, Nov 05 2002

EXTENSIONS

Offset changed to 1 by A.H.M. Smeets, Feb 10 2019

STATUS

approved

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Last modified June 26 20:19 EDT 2019. Contains 324380 sequences. (Running on oeis4.)