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Recurrence Relations
easy
0:00.0
Given
a
n
=
a
n
−
1
+
n
a_n = a_{n-1} + n
a
n
=
a
n
−
1
+
n
with
a
0
=
0
a_0 = 0
a
0
=
0
. Calculate
a
2
a_2
a
2
.
A
1
B
2
C
3
D
4
Submit Answer