Give the first three terms of the sequence of 1.Tn+1=Tn+n
2 answers
Tn-1,Tn-2,Tn-3
T1
T2 = T1+1
T3 = T2+2 = T1+3
...
Tn = T1 + n(n+1)/2
T2 = T1+1
T3 = T2+2 = T1+3
...
Tn = T1 + n(n+1)/2