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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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 LINKS FORMULA a(n) = A249740(A249716(n)). PROG (Scheme) (define (A249718 n) (A249740 (A249716 n))) CROSSREFS Cf. A249716, A249740. 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 A161310 A161244 Adjacent sequences:  A249715 A249716 A249717 * A249719 A249720 A249721 KEYWORD nonn AUTHOR Antti Karttunen, Nov 04 2014 STATUS approved

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Last modified November 28 07:52 EST 2021. Contains 349401 sequences. (Running on oeis4.)