It looks like two different operations in a pattern. Taking 4 multiply by 3 = 12.
Taking 12 add 2 = 14. Taking 14 multiply by 3= 42 ........ so next is .....
taking 42 add 2 = 44.
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12 x 2 = 42 14 x 3 = 42 7 x 6 = 42 6 x 7 = 42 2 x 12 = 42 3 x 14 = 42
12+5 = 6 22+5 = 9 32+5 = 14 42+5 = 21 52+5 = 30 62+5 = 41 Square the sequence number then add 5.
They are 14, 42, 126, 378 and 1134.
12 + 14 + 16 = 42
This is a three step sequence of operations. (1) -4 : (2) ÷3 : (3) x2 46 - 4 = 42 : 42 ÷ 3 = 14 : 14 x 2 = 28 28 - 4 = 24 : 24 ÷ 3 = 8 : 8 x 2 = 16 The next number is therefore 16 - 4 = 12.