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**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,246

Sorry everyone, it has been a long time since my last post here.

So, it is the sum of two sexy primes (http://www.mathisfunforum.com/viewtopic.php?id=19312) and square numbers, and subtracted by the square root.

SP = Sexy prime

SQN = Square number

SQRT = Square root

Example :

(SP + SP) + (SQN + SQN) - (SQRT + SQRT)

(5 + 11) + (1 + 4) - (1 + 2)

(16 + 5) - 3

21 - 3

18

Go, continue the sequence!

Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 104,337

Hi;

I am getting:

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,246

Okay. Continue the pattern?

Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 104,337

(17+23) + (9 + 16)-(3+4) = 58

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

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