Question

4,13,53,226,1567,____? next number?

Answer 1

$hi...$
4 × 3 + 1 = 13

13 × 4 + 1 = 53

53 × 5 + 1 = 266

266 × 6 + 1 = 1597

1597 × 7 + 1 = 11180

Thus . . . . .

The next number is 11180

Answer 2

hey there
$4 \times 3 + 1 = 13 \\ 13 \times 4 + 1 = 53 \\ 53 \times 5 + 1 = 226 \\ 226 \times 6 + 1 = 1567$