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A048947 Let b(n) be the terms of A046528. Then sigma(b(n))=2^(a(n)), where sigma(n) is the sum of divisors function. +0
2
0, 2, 3, 5, 5, 7, 7, 8, 9, 10, 10, 12, 12, 13, 14, 15, 15, 16, 17, 17, 18, 18, 19, 19, 20, 20, 20, 21, 21, 22, 22, 22, 22, 23, 23, 24, 24, 24, 24, 25, 25, 25, 26, 26, 26, 27, 27, 27, 27, 28, 28, 29, 29, 29, 29, 30, 30, 31, 31, 31, 31, 32, 32, 32, 33, 33, 33, 34, 34, 34, 34, 35 (list; graph; listen)
OFFSET

0,2

LINKS

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

CROSSREFS

Cf. A048528.

Sequence in context: A154290 A002334 A115732 this_sequence A114519 A126762 A082048

Adjacent sequences: A048944 A048945 A048946 this_sequence A048948 A048949 A048950

KEYWORD

nonn,new

AUTHOR

Eric Weisstein (eric(AT)weisstein.com)

EXTENSIONS

Definition edited by Daniel Forgues (squid(AT)zensearch.com), Nov 07 2009

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.


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