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A249718
The largest prime whose square divides the first nonsquarefree number on row n of Pascal's triangle, 1 if all terms on that row are squarefree.
5
1, 1, 1, 1, 2, 1, 2, 1, 2, 3, 3, 1, 2, 3, 2, 3, 2, 2, 3, 3, 2, 3, 2, 1, 2, 5, 5, 3, 2, 3, 2, 3, 2, 2, 2, 2, 3, 3, 2, 3, 2, 2, 2, 3, 2, 3, 3, 3, 2, 7, 5, 5, 2, 5, 3, 3, 2, 2, 2, 3, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 2, 5, 2, 5, 2, 3, 2, 3, 3, 3, 2, 3, 2, 3, 2, 2, 3, 3, 2, 3, 2, 3, 2, 2, 7, 3, 5, 5, 5, 5, 2, 2, 2, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 3, 3, 3, 2
OFFSET
0,5
FORMULA
a(n) = A249740(A249716(n)).
PROG
(Scheme) (define (A249718 n) (A249740 (A249716 n)))
CROSSREFS
Differs from A249717 for the first time at n=36, where a(36) = 3, while A249717(36) = 2.
Sequence in context: A035391 A242552 A249717 * A244518 A367251 A161310
KEYWORD
nonn
AUTHOR
Antti Karttunen, Nov 04 2014
STATUS
approved