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Search: id:A127232
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| 1, 120, 524268, 140737488355280, 2596148429267413814265248164609936, 57896044618658097711785492504343953926634992332820282019728792003956564819712
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OFFSET
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1,2
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COMMENT
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a(n) is common to the r-step Fibonacci sequence and the s-step Lucas sequence for s=A001792(n)-2 and r=s-n+1. See A127208 for more information about the intersection of Fibonacci and Lucas sequences.
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FORMULA
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a(n)=2^(k-1)-k for k=A001792(n).
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EXAMPLE
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a(2)=120 appears in the 5-step Fibonaaci sequence A001591 and the 6-step Lucas sequence A074584. a(3)=524268 appears in the 16-step Fibonacci sequence and the 18-step Lucas sequence.
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CROSSREFS
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Sequence in context: A009767 A003789 A046987 this_sequence A166351 A147964 A100734
Adjacent sequences: A127229 A127230 A127231 this_sequence A127233 A127234 A127235
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KEYWORD
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nonn
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AUTHOR
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T. D. Noe (noe(AT)sspectra.com), Jan 09 2007
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