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Search: id:A057137
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| A057137 |
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Concatenate next digit at right hand end. |
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+0
6
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| 0, 1, 12, 123, 1234, 12345, 123456, 1234567, 12345678, 123456789, 1234567890, 12345678901, 123456789012, 1234567890123, 12345678901234, 123456789012345, 1234567890123456, 12345678901234567, 123456789012345678
(list; graph; listen)
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OFFSET
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0,3
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COMMENT
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Also called the triangle of the gods (see Pickover link).
For primes see A120819.
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REFERENCES
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Clifford A. Pickover, A Passion for Mathematics, Wiley, 2005; see p. 61.
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LINKS
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T. D. Noe, Table of n, a(n) for n=0..100
Clifford Pickover, Triangle of the Gods
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FORMULA
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a(n) = 10*(a(n-1)-floor[n/10])+n = floor[A057139(n)/10^(n-1)]
a(n) = 10*a(n-1)+(n mod 10). - Paolo P. Lava (ppl(AT)spl.at), Feb 01 2008
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CROSSREFS
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Alternative progression for n >= 10 compared with A007908 and A014824. Cf. A057138 for reverse.
Cf. also A120819.
Sequence in context: A037701 A037610 A035239 this_sequence A014824 A060555 A138957
Adjacent sequences: A057134 A057135 A057136 this_sequence A057138 A057139 A057140
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KEYWORD
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base,easy,nonn
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AUTHOR
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Henry Bottomley (se16(AT)btinternet.com), Aug 12 2000
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