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Old 2021-11-25, 23:59   #1
MattcAnderson
 
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"Matthew Anderson"
Dec 2010
Oregon, USA

2·3·191 Posts
Default Four OEIS.org sequences

Some OEIS.org sequences
I think these are cool.

The positive integers
1,2,3,4,5,6, ...
A000027

Odd numbers starting with -1
a(n) = 2*n - 1 with n = 0,1,2,3, ...
-1,1,3,5,7,9, ...
A060747

Product of decimal digits of n
0,1,2,3,4,5,6,7,8,9,0,1,2
A007954

Hours struck by a clock
1,2,3,4,5,6,7,8,9,10,11,12, 1,2,3, ...
A034326

Enjoy.
Matt
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