This Number Sequence is Driving me MAD

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SUMMARY

The number sequence presented is 1, 2, 4, 6, 10, 12, 16, 18. The missing numbers in the sequence are 6 and 12, derived from the pattern of adding consecutive prime numbers and then subtracting one. The sequence can be defined as taking each prime number, subtracting one, and including the results in the sequence. This method effectively generates the sequence as confirmed by user gazzo.

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  • Understanding of prime numbers and their properties
  • Basic arithmetic operations (addition and subtraction)
  • Familiarity with number sequences and patterns
  • Ability to analyze mathematical logic
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  • Explore the concept of prime numbers and their significance in mathematics
  • Learn about different types of number sequences, such as Fibonacci and arithmetic sequences
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recon
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1,2,4,__,10,___,16,18

I saw this problem in a kid's math textbook, and I still can't figure out what the answer is supposed to be. I can't see the logic. Pls. lend me your thoughts on this.
 
Mathematics news on Phys.org
Primes minus one.

1, 2, 4, 6, 10, 12, 16 ,18, ...
 
thanks a lot gazzo! I owe you one.
 

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