A309919 Total number of divisors d of m (counted with multiplicity), such that the prime signature of d is a partition of four and m runs through the set of least numbers whose prime signature is a partition of n.

5, 20, 65, 160, 371, 756, 1485, 2701, 4822, 8144, 13558, 21756, 34449, 53044, 80874, 120573, 178215, 258897, 373069, 530068, 748026, 1043001, 1445321, 1983124, 2705411, 3659491, 4924840, 6578409, 8746089, 11553224, 15194682, 19870115, 25881012, 33537548

Offset

4,1

Links

Alois P. Heinz, Table of n, a(n) for n = 4..4000

Crossrefs

Column k=4 of A079025.

Sequence in context: A271260 A270734 A271411 * A195861 A001939 A100534

Adjacent sequences: A309916 A309917 A309918 * A309920 A309921 A309922

Keyword

nonn

Author

Alois P. Heinz, Aug 23 2019

Status

approved