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A065447
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Concatenation of 1, 00, 111, 0000, ..., n 1's (if n is odd) or n 0's (if n is even).
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4
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1, 100, 100111, 1001110000, 100111000011111, 100111000011111000000, 1001110000111110000001111111, 100111000011111000000111111100000000, 100111000011111000000111111100000000111111111, 1001110000111110000001111111000000001111111110000000000
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,44
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PROG
| (PARI) { m=10; for (n=1, 44, if (n==1, a=1, m*=10; a*=m; if (n%2, a+=(m - 1)/9)); write("b065447.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Oct 19 2009]
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CROSSREFS
| For decimal version see A065760. Cf. A065761.
Sequence in context: A163663 A151648 A013747 * A036507 A202055 A185303
Adjacent sequences: A065444 A065445 A065446 * A065448 A065449 A065450
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KEYWORD
| base,easy,nonn
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AUTHOR
| Lior Manor (lior.manor(AT)gmail.com) Nov 18 2001
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