A280306 a(n) = A049501(A003418(n)).

0, 0, 1, 2, 2, 4, 4, 13, 13, 16, 16, 28, 28, 46, 46, 46, 46, 77, 77, 48, 48, 48, 48, 117, 117, 141, 141, 134, 134, 213, 213, 326, 326, 326, 326, 326, 326, 352, 352, 352, 352, 389, 389, 413, 413, 413, 413, 508, 508

Offset

0,4

Comments

This calculates the major index (1st definition) of the LCM of all the numbers from 1 to n.

Links

Indranil Ghosh, Table of n, a(n) for n = 0..10000

Indranil Ghosh, Python Program to generate the sequence

Example

For n=10, the LCM of all the numbers from 1 to 10 is 2520 = 100111011000_2, whose major index (1st definition) is 16, so a(10)=16.

Crossrefs

Cf. A049501, A003418, A279519.

Sequence in context: A095329 A327486 A321514 * A140723 A106051 A066781

Adjacent sequences: A280303 A280304 A280305 * A280307 A280308 A280309

Keyword

nonn,base

Author

Indranil Ghosh, Dec 31 2016

Status

approved