512311

Properties

Appears in sequences

• Concatenation of first 3 digits and last 3 digits of n-th Mersenne prime A000668(n).at n=29A138866
• a(n) is the number of distinct valid solutions taking into account the ambiguity of open and closed absolute value bars for an input of -1 to -2*(n)-1 with absolute value bars between each (|-1|, |-1|-2|-3|, |-1|-2|-3|-4|-5|, etc.).at n=12A332415
• Prime numbersat n=42461