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A087618
a(n) is the number of pair of consecutive numbers (k,k+1) with k<=10^n such that k and k+1 are both squarefree.
4
1, 5, 33, 323, 3230, 32269, 322619, 3226343, 32263377, 322634281, 3226340896, 32263409594, 322634100659, 3226340989192
OFFSET
0,2
LINKS
Eric Weisstein's World of Mathematics, Squarefree
FORMULA
Asymptotic density is A065474.
CROSSREFS
Sequence in context: A084845 A198079 A098460 * A322178 A134152 A140424
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Sep 19 2003
EXTENSIONS
a(11)-a(13) from Donovan Johnson, Jun 26 2010
STATUS
approved