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A279519 a(n) = A049502(A003418(n)). 3
0, 0, 0, 0, 0, 0, 0, 9, 11, 14, 14, 23, 23, 42, 42, 42, 46, 79, 79, 48, 48, 48, 48, 95, 95, 125, 125, 180, 180, 182, 182, 307, 320, 320, 320, 320, 320, 365, 365, 365, 365, 390, 390, 451, 451, 451, 451, 360, 360, 564, 564, 564, 564, 582, 582, 582, 582, 582, 582, 745, 745, 804, 804, 804, 822, 822, 822, 866 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

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 (2nd definition) is 14, so a(10)=14.

MATHEMATICA

Map[Total@ SequencePosition[Reverse@ #, {1, 0}][[All, 1]] &@ IntegerDigits[#, 2] &, {1}~Join~Table[LCM @@ Range@ n, {n, 67}]] (* Michael De Vlieger, Dec 16 2016, Version 10.1 *)

CROSSREFS

Cf. A003418, A049502.

Sequence in context: A027726 A044873 A341080 * A307188 A209321 A212816

Adjacent sequences:  A279516 A279517 A279518 * A279520 A279521 A279522

KEYWORD

nonn,base

AUTHOR

Indranil Ghosh, Dec 14 2016

STATUS

approved

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Last modified May 17 22:15 EDT 2021. Contains 343992 sequences. (Running on oeis4.)