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A002282
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8*(10^n - 1)/9.
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21
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0, 8, 88, 888, 8888, 88888, 888888, 8888888, 88888888, 888888888, 8888888888, 88888888888, 888888888888, 8888888888888, 88888888888888, 888888888888888, 8888888888888888, 88888888888888888
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| If the initial term is omitted, might be called eightful (or hateful) numbers!
a(n) = A178635(n)/A002283(n). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 31 2010]
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LINKS
| Harry J. Smith, Table of n, a(n) for n=0,...,200
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FORMULA
| a(n)=10*a(n-1)+8, with a(0)=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Jan 23 2009]
a(n)=11a(n-1)-10a(n-2), with a(0)=0 and a(1)=8. [From Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Feb 03 2009]
G.f.: 8x/((1-x)(1-10x)) [From Jaume Oliver Lafont (joliverlafont(AT)gmail.com), Feb 03 2009]
a(n)=a(n-1)+8*10^(n-1) with a(0)=0; [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Jul 22 2010]
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PROG
| (PARI) { a=-4/5; for (n = 0, 200, a+=8*10^(n - 1); write("b002282.txt", n, " ", a); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 27 2009]
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CROSSREFS
| Cf. A051003.
Cf. A059482 [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jun 27 2009]
Cf. A002275, A002276, A002277, A002278, A002279, A002280, A002281, A059988, A075412. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 31 2010]
Sequence in context: A053378 A062185 A053379 * A112907 A053380 A115864
Adjacent sequences: A002279 A002280 A002281 * A002283 A002284 A002285
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KEYWORD
| easy,nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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