A121457 a(n) = A096162(n) * A036039(n)

1, 1, 2, 2, 3, 6, 6, 8, 6, 12, 24, 24, 30, 20, 40, 30, 60, 120, 120, 144, 90, 80, 180, 120, 90, 240, 180, 360, 720, 720, 840, 504, 420, 1008, 630, 560, 420, 1260, 840, 630, 1680, 1260, 2520, 5040, 5040, 5760, 3360, 2688, 2520, 6720, 4032, 3360, 2520, 2240, 8064

Offset

1,3

Comments

Refines A007841 using partitions associated with least prime signatures.

Links

Table of n, a(n) for n=1..55.

Example

The table begins
1
1 2
2 3 6
6 8 6 12 24
24 30 20 40 30 60 120

Crossrefs

Cf. A025487 A000041 A036039 A096162 A007841.

Sequence in context: A139359 A082481 A136573 * A093784 A035560 A077012

Adjacent sequences: A121454 A121455 A121456 * A121458 A121459 A121460

Keyword

easy,nonn,tabf

Author

Alford Arnold, Jul 31 2006

Extensions

More terms from Justin Eaton (jeaton2(AT)ashland.edu), Oct 18 2006

Status

approved