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 A225425 Number of "abc-hits" with c < 10^n. 2
 1, 6, 31, 120, 418, 1268, 3499, 8987, 22316, 51677, 116978, 252856, 528275, 1075319, 2131671, 4119410, 7801334, 14482065 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Let rad(x) be the function that computes the squarefree kernel of x (see A007947). A triple {a,b,c} of positive integers with a+b=c, gcd(a,b)=1 and c > rad(a*b*c) is called an abc-hit. The first 6 terms were computed using A130510. More terms were found on the Wikipedia page. LINKS Wikipedia, abc conjecture EXAMPLE The only solution under 10 is 1 + 8 = 9. CROSSREFS Cf. A130510, A130511, A130512 (c, a, and rad(a*b*c)). Cf. A225426 (a,b,c in one sequence). Sequence in context: A166786 A003728 A216370 * A267890 A244199 A128568 Adjacent sequences:  A225422 A225423 A225424 * A225426 A225427 A225428 KEYWORD nonn,base,hard,more AUTHOR T. D. Noe, May 22 2013 STATUS approved

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Last modified November 27 05:27 EST 2020. Contains 338678 sequences. (Running on oeis4.)