Assuming the sequence does not merely skip from 13 to 49, and instead carries on in the same pattern, the sequence proceeds thus:
1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49.
This is thirteen terms. The formula for finding these terms is 4x-3.
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arithmetic sequence
No, the Fibonacci sequence is not an arithmetic because the difference between consecutive terms is not constant
Oh, dude, an arithmetic sequence is a sequence of numbers where the difference between consecutive terms is constant. So, to check if 310172431 is an arithmetic sequence, you'd need a sequence of numbers, not just one lonely number. Like, you can't have a party with just one person, right? So, in this case, 310172431 is not an arithmetic sequence because it's just a single number hanging out by itself, feeling all left out.
The following formula generalizes this pattern and can be used to find ANY term in an arithmetic sequence. a'n = a'1+ (n-1)d.
A single term, such as 51474339 does not define a sequence.