A056603 Squarefree kernels of distinct values of lcm(1,...,m) (A051451).

1, 2, 6, 6, 30, 210, 210, 210, 2310, 30030, 30030, 510510, 9699690, 223092870, 223092870, 223092870, 6469693230, 200560490130, 200560490130, 7420738134810, 304250263527210, 13082761331670030, 614889782588491410

Offset

1,2

Links

Table of n, a(n) for n=1..23.

Example

Only values of A002110 arise with repetitions, but the sequence is not identical to A034386. It is more compact than A034386, but still not a repetition-free primorial sequence. E.g., the values 1,2,6,30,210,2310,30030,... occurs in A034386 1,1,2,2,4,2,4,2,4,... times, while the same values arise here 1,1,2,1,3,1,2,1,1,... times. This sequence represents a transition between A034386 and the more compact A002110.

Crossrefs

Cf. A002110, A003418, A034386, A051451.

Sequence in context: A123144 A179215 A069260 * A019198 A155164 A155948

Adjacent sequences: A056600 A056601 A056602 * A056604 A056605 A056606

Keyword

nonn

Author

Labos Elemer, Aug 07 2000

Status

approved