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Search: id:A090208
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| A090208 |
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Partial sums of sequence (A090206) of consecutive nonprime Fibonacci numbers. |
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+0
1
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| 1, 2, 9, 29, 55, 89, 199, 521, 987, 1597, 3571, 6765, 10946, 17711, 28657, 64079, 121393, 196418, 317811, 514229, 1149851, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169, 63245986, 39088169
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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F(0) = 0; F(1) = 1; F(n) = F(n-1) + F(n-2); F(0:9) = 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 nonprimes: 0, 1, 1, 8, 21 sums of consecutive nonprimes: 1, 2, 9, 29
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CROSSREFS
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Cf. A090206, A000045
Sequence in context: A002747 A110377 A041877 this_sequence A123058 A062452 A152891
Adjacent sequences: A090205 A090206 A090207 this_sequence A090209 A090210 A090211
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KEYWORD
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easy,nonn
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AUTHOR
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Felix Tubiana (fat2(AT)columbia.edu), Jan 22 2004
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