What is the next number in the pattern

2,7,26,101,400

1 answer

I just can't see a pattern

even Wolfram, which surprised me with a "pattern" function, could not see anything

(I tested to see if Wolfram was able to pick up a pattern.
I used n + 2^n to get the terms 3,6,11,20,37
and entered

pattern { 3,6,11,20,37}

look what it gave me
http://www.wolframalpha.com/input/?i=pattern+%7B3%2C6%2C11%2C20%2C37%7D
What an amazing webpage ! )

But for yours , nothing!