The result is 222.
The underlying calculation is as follows:
23 + 2 = 10
33 + 3 = 30
43 + 4 = 68
53 + 5 = 130
63 + 6 = 222
73 + 7 = 350
Consequently, the absent value is 222.
The sum\(\displaystyle\sum_{n=1}^{\infty} \frac{2 n^2+3 n+4}{(2 n) !}\) is equal to:
If aa is the greatest term in the sequence \(a_n=\frac{n^3}{n^4+147},n=1,2,3,...,\) then a is equal to______________.