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1,1,2,10,65,442......? Find 1st 24 terms of series
2 Antworten
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I found this on google
can anyone explain this
1 * 1 = 1
1 * 2 = 2
2 * 5 = 10
5 * 13 = 65
13 * 34 = 442
34 * 89 = 3026
89 * 233 = 20737
233 * 610 = 142130
610 * 1597 = 974170
1597 * 4181 = 6677057
4181 * 10946 = 45765226
10946 * 28657 = 313679522
28657 * 75025 = 2149991425
75025 * 196418 = 14736260450
196418 * 514229 = 101003831722
514229 * 1346269 = 692290561601
1346269 * 3524578 = 4745030099482
3524578 * 9227465 = 32522920134770
9227465 * 24157817 = 222915410843905
24157817 * 63245986 = 1527884955772562
63245986 * 165580141 = 10472279279564026
165580141 * 433494437 = 71778070001175617
433494437 * 1134903170 = 491974210728665290
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a(1) = 1, a(2) = 1.
For n >= 3 , a(n) = Fibonacci(2*n-5)*Fibonacci(2*n-3).
https://oeis.org/A064170
First 24 terms of OEIS A064170:
https://oeis.org/A064170/list