# Math Help - nth term

1. ## nth term

any to help me with this problem!!!

find the nth term of the series
1,2,4,7,11

2. The difference in each consecutive term is increasing by 1.

$1,2,4,7,11,\dots$

$1(+1)=2$

$2(+2)=4$

$2(+3)=7$

and so on

3. Originally Posted by khotso
any to help me with this problem!!!

find the nth term of the series
1,2,4,7,11

00+01 = 01 = a(00)
01+01 = 02 = a(01)
02+02 = 04 = a(02)
03+04 = 07 = a(03)
04+07 = 11 = a(04)
05+11 = 16 = a(05)
06+16 = 22 = a(06)
07+22 = 29 = a(07)
08+29 = 37 = a(08)
09+37 = 46 = a(09)
10+46 = 56 = a(10)

a(n) = a(n-1) + n

Is this what you were looking for?

4. yes that is the answer