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A082407 define u(k) as u(1)=1 u(k)=binomial(2*u(k-1),u(k-1)) (mod k), sequence gives values of k such that u(k)=0. +0
1
2, 12, 17, 21, 26, 31, 36, 42, 48, 53, 60, 74, 79, 84, 95, 102, 107, 113, 118, 123, 131, 136, 143, 151, 156, 162, 167, 172, 177, 185, 190, 195, 201, 212, 217, 224, 231, 236, 241, 246, 251, 257, 267, 272, 278, 293, 302, 310, 315, 325, 333, 339, 344, 349, 354 (list; graph; listen)
OFFSET

1,1

FORMULA

It seems that a(n) is asymptotic to c*n with 6.1 < c < 6.2.

CROSSREFS

Sequence in context: A057123 A134833 A057827 this_sequence A063576 A120350 A032413

Adjacent sequences: A082404 A082405 A082406 this_sequence A082408 A082409 A082410

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 23 2003

page 1

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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