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A127232
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Eulerian numbers A000295 appearing in the intersection of Fibonacci and Lucas sequences A124168 and A127208.
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2
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OFFSET
| 1,2
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COMMENTS
| 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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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 1..11
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FORMULA
| a(n)=2^(k-1)-k for k=A001792(n).
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EXAMPLE
| 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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PROG
| (MAGMA) [2^((n+2)*2^(n-1)-1)-(n+2)*2^(n-1): n in [1..7]]; // Vincenzo Librandi, Aug 26 2011
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CROSSREFS
| Sequence in context: A181750 A003789 A046987 * A166351 A147964 A172857
Adjacent sequences: A127229 A127230 A127231 * A127233 A127234 A127235
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KEYWORD
| nonn
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AUTHOR
| T. D. Noe (noe(AT)sspectra.com), Jan 09 2007
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