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A139802
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a(1)=1, a(2)=2, a(n)=n^a(n-2)
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1
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OFFSET
| 0,2
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COMMENTS
| Exponential double factorial.
The next term is too large to include.
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EXAMPLE
| a(1)=1
a(2)=2
a(3)=3^1=3
a(4)=4^2=16
a(5)=5^3=125
a(6)=6^16=2821109907456
etc.
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MAPLE
| P:=proc(n) local a, b, c, i; a:=1; b:=2; print(a); print(b); for i from 3 by 1 to n do c:=i^a; print(c); a:=b; b:=c; od; end: P(10);
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CROSSREFS
| Cf. A049384.
Sequence in context: A007118 A012572 A067848 * A063666 A006247 A052318
Adjacent sequences: A139799 A139800 A139801 * A139803 A139804 A139805
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KEYWORD
| easy,nonn
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AUTHOR
| Paolo P. Lava & Giorgio Balzarotti (paoloplava(AT)gmail.com), May 22 2008
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