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 A298688 a(n) is the least i such that Fibonacci(i) is divisible by i+k for all k=0..n. 1
 1, 60, 60, 540, 13440, 13440, 329400, 175472640, 50238568800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS a(0)..a(5) are first terms of sequences A023172, A217738, A298684, A298685, A298686, A298687. LINKS EXAMPLE Least i such that Fibonacci(i) is divisible by i and i+1 (cf. A217738) is i=60, therefore a(1)=60. Least i such that Fibonacci(i) is divisible by i, i+1, ..., i+5 (cf. A298687) is i=13440, therefore a(5)=13440. CROSSREFS Cf. A000045, A023172, A217738, A221018, A225219, A298684, A298685, A298686, A298687. Sequence in context: A051713 A060225 A124901 * A247437 A266916 A256749 Adjacent sequences:  A298685 A298686 A298687 * A298689 A298690 A298691 KEYWORD nonn,hard,more AUTHOR Alex Ratushnyak, Jan 24 2018 EXTENSIONS a(7) from Alois P. Heinz, Jan 25 2018 a(6) inserted by Chai Wah Wu, Jan 26 2018 a(8) from Silvester Resnik, May 18 2018 STATUS approved

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Last modified October 30 12:22 EDT 2020. Contains 338079 sequences. (Running on oeis4.)