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Search: id:A075420
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| A075420 |
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Trajectory of n under the Reverse and Add! operation carried out in base 4 (presumably) does not reach a palindrome. |
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+0
6
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| 290, 318, 378, 381, 438, 444, 462, 498, 501, 504, 510, 545, 567, 573, 627, 633, 636, 639, 693, 696, 699, 717, 719, 732, 751, 753, 756, 759, 765, 775, 795, 799, 800, 822, 823, 828, 835, 847, 859, 882, 883, 888, 894, 895, 915, 919, 927, 948, 954, 967, 972
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Base 4 analogue of A023108 (base 10) and A066059 (base 2).
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LINKS
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Index entries for sequences related to Reverse and Add!
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PROGRAM
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(PARI) {stop=1000; for(n=1, 980, k=n; c=0; while(c<stop, a=k; rev=0; while(a>0, d=divrem(a, 4); a=d[1]; rev=4*rev+d[2]); if(rev==k, c=stop+1, k=k+rev; c++)); if(c==stop, print1(n, ", ")))}
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CROSSREFS
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Cf. A023108, A066059, A075421, A075299, A075153.
Sequence in context: A013883 A091680 A129245 this_sequence A075421 A090839 A075299
Adjacent sequences: A075417 A075418 A075419 this_sequence A075421 A075422 A075423
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KEYWORD
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base,nonn
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Sep 18 2002
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