EM-1643

Number patterns and the nth term

E Math · Secondary 4 · Medium · Number patterns and the nth term

The first three terms of a sequence are

S_1 = 2\times 3+4=10

S_2 = 3\times 4+4=16

and

S_3 = 4\times 5+4=24

. The

n

th term is given by

S_n = n^2+3n+4

. Find

S_{30}

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