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A100366 a[n] is the least prime number q such that q,q+1,q+2,q+3,...,q+n-1 have 2,4,8,...,2^n divisors respectively. +0
1
2, 5, 193, 613, 1124581 (list; graph; listen)
OFFSET

1,1

COMMENT

a[3], a[4], a[5] are the initial terms of A100363, A100364, A100365 resp.

EXAMPLE

a[4]=613: q=613 = prime and q,q+1,q+2,q+3=616 have 2,4,8,16=2^4 divisors respectively

CROSSREFS

Cf. A000005, A063446, A100363, A100364.

Adjacent sequences: A100363 A100364 A100365 this_sequence A100367 A100368 A100369

Sequence in context: A124275 A013130 A111392 this_sequence A012975 A012954 A006271

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Nov 19 2004

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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