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A127851
a(n) has n 1's followed by C(n-1,2) 0's.
1
0, 1, 11, 1110, 1111000, 11111000000, 1111110000000000, 1111111000000000000000, 11111111000000000000000000000, 1111111110000000000000000000000000000
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OFFSET
0,3
COMMENTS
Base 2 version of
A127850
.
LINKS
Table of n, a(n) for n=0..9.
FORMULA
a(n)=10^C(n,2)*(10^n-1)/(9*10^(n-1))
CROSSREFS
Sequence in context:
A280042
A287044
A191111
*
A135656
A130602
A362919
Adjacent sequences:
A127848
A127849
A127850
*
A127852
A127853
A127854
KEYWORD
easy
,
nonn
AUTHOR
Paul Barry
, Feb 02 2007
STATUS
approved
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Last modified August 17 06:36 EDT 2024. Contains 375200 sequences. (Running on oeis4.)