A359876 - OEIS

A359876

a(n) is the smallest tribonacci number (A000073) with exactly n prime factors (counted with multiplicity).

1, 2, 4, 44, 24, 5768, 504, 10562230626642, 3136, 7046319384, 615693474, 53798080, 4680045560037375, 35574238430251050319992, 4659412488735286161146176, 23523635785731871586396890786299881280, 79932289960699059086717998848

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

Eric Weisstein's World of Mathematics, Prime Factor

Eric Weisstein's World of Mathematics, Tribonacci Number

EXAMPLE

a(5) = 5768, because 5768 is a tribonacci number with 5 prime factors (counted with multiplicity) {2, 2, 2, 7, 103} and this is the smallest such number.

CROSSREFS

Cf. A000073, A001222, A072397, A359848, A359877, A359878.

Sequence in context: A009717 A018317 A384062 * A059794 A116611 A141142

Adjacent sequences: A359873 A359874 A359875 * A359877 A359878 A359879

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Jan 16 2023

STATUS

approved