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A114993 (n-th 4-almost prime)^(n-th 4-almost prime). +0
1
18446744073709551616, 1333735776850284124449081472843776, 106387358923716524807713475752456393740167855629859291136, 12089258196146291747061760000000000000000000000000000000000000000 (list; graph; listen)
OFFSET

1,1

COMMENT

4-almost prime analogue of A051674. A114850 is semiprime analogue of A051674. a(5) = 56^56 has 94 digits.

FORMULA

a(n) = A014613(n)^A014613(n).

EXAMPLE

a(1) = A014613(1)^A014613(1) = 16^16 = 18446744073709551616 = 2^64.

a(2) = A014613(2)^A014613(2) = 24^24 = 1333735776850284124449081472843776 = 2^72 * 3^24.

a(3) = A014613(3)^A014613(3) = 36^36 = 2^72 * 3^72.

CROSSREFS

Cf. A001358, A014613, A051674, A113877, A114850.

Sequence in context: A095435 A115540 A104263 this_sequence A105303 A116356 A132902

Adjacent sequences: A114990 A114991 A114992 this_sequence A114994 A114995 A114996

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), Feb 22 2006

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.


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