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A179478 a(n) = sqrt(A073609(n+1)-A073609(n)) 0
1, 2, 2, 6, 6, 12, 6, 18, 18, 6, 6, 6, 12, 12, 12, 6, 6, 6, 30, 30, 30, 18, 30, 6, 18, 6, 18, 24, 18, 12, 6, 18, 6, 24, 12, 48, 24, 6, 12, 30, 18, 12, 24, 18, 30, 6, 12, 30, 54, 12, 54, 6, 24, 30, 42, 18, 12, 36, 6, 6, 12, 24, 18, 12, 6, 6, 12, 12, 18, 24, 6, 12, 6, 12, 30, 48, 24, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

After 1,1,2, all terms are multiples of 6.

LINKS

Table of n, a(n) for n=0..77.

CROSSREFS

Cf. A073609 a(0)=2, a(n) for n>0 is the smallest prime>a(n-1) that differs from a(n-1) by a square.

Sequence in context: A200561 A241380 A028476 * A051548 A110660 A332759

Adjacent sequences:  A179475 A179476 A179477 * A179479 A179480 A179481

KEYWORD

nonn

AUTHOR

Zak Seidov, Jul 16 2010

STATUS

approved

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Last modified May 31 22:45 EDT 2020. Contains 334756 sequences. (Running on oeis4.)