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Search: id:A139022
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A139022 a(n) = sum{k=0 to n} A139021(k)). +0
3
2, 5, 16, 29, 256, 563, 1024, 1487, 4096, 6779, 65536, 124367, 262144, 400151, 17179869184, 34359339617, 274877906944, 515396474423, 19807040628566084398385987584, 39614081257132168281375501017 (list; graph; listen)
OFFSET

0,1

COMMENT

By definition, every term is a power of a prime.

For all n >= 0, a(2n) = 2^m, m >= 1.

LINKS

Leroy Quet, Home Page (listed in lieu of email address)

CROSSREFS

Cf. A139020, A139021.

Sequence in context: A101847 A117557 A137997 this_sequence A053683 A082085 A054971

Adjacent sequences: A139019 A139020 A139021 this_sequence A139023 A139024 A139025

KEYWORD

nonn

AUTHOR

Leroy Quet Apr 06 2008

EXTENSIONS

a(5)-a(19) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 26 2008

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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