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1, 1, 4, 1, 4, 4, 16, 1, 4, 4, 16, 4, 16, 16, 64, 1, 4, 4, 16, 4, 16, 16, 64, 4, 16, 16, 64, 16, 64, 64, 256, 1, 4, 4, 16, 4, 16, 16, 64, 4, 16, 16, 64, 16, 64, 64, 256, 4, 16, 16, 64, 16, 64, 64, 256, 16, 64, 64, 256, 64, 256, 256, 1024, 1, 4, 4, 16, 4, 16, 16, 64, 4, 16, 16, 64, 16, 64
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,3
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EXAMPLE
| Contribution from Omar E. Pol (info(AT)polprimos.com), Jul 21 2009: (Start)
If written as a triangle:
1;
1,4;
1,4,4,16;
1,4,4,16,4,16,16,64;
1,4,4,16,4,16,16,64,4,16,16,64,16,64,64,256;
1,4,4,16,4,16,16,64,4,16,16,64,16,64,64,256,4,16,16,64,16,64,64,256,16,64,...
(End)
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MAPLE
| Cf. A048896, A147610, A151780.
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CROSSREFS
| Cf. A000302, A102376. [From Omar E. Pol (info(AT)polprimos.com), Jul 21 2009]
Sequence in context: A035646 A144034 A204714 * A093561 A081773 A167431
Adjacent sequences: A151780 A151781 A151782 * A151784 A151785 A151786
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Jun 25 2009
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