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A329733 Number of sequences n = b_1 < b_2 < ... < b_t = A329732(n) such that b_1*b_2*...*b_t is a perfect cube. 0
1, 1, 1, 2, 2, 4, 2, 6, 1, 1, 1, 68, 1, 180, 4, 2, 1, 2968, 1, 31724, 2, 2, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

Conjecture: records are at 0 and the odd primes.

LINKS

Table of n, a(n) for n=0..22.

EXAMPLE

For n = 5, the a(5) = 4 sequences are

5 *  6 *  9 * 10 * 15 * 18      = 90^3,

5 *  6 *  8 *  9 * 10 * 15 * 18 = 180^3,

5 * 10 * 15 * 16 * 18           = 60^3, and

5 *  8 * 10 * 15 * 16 * 18      = 120^3.

CROSSREFS

Cf. A329732.

Sequence in context: A179013 A090397 A328729 * A289624 A258446 A054704

Adjacent sequences:  A329730 A329731 A329732 * A329734 A329735 A329736

KEYWORD

nonn,more

AUTHOR

Peter Kagey, Nov 19 2019

STATUS

approved

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Last modified September 30 05:03 EDT 2020. Contains 337435 sequences. (Running on oeis4.)