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A048148 Distinct elements of A045948. 4
1, 2, 4, 12, 24, 120, 360, 720, 5040, 10080, 30240, 332640, 1663200, 3326400, 43243200, 129729600, 259459200, 4410806400, 30875644800, 586637251200, 1173274502400, 26985313555200, 134926567776000, 404779703328000, 11738611396512000, 363896953291872000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
A001222(a(n)) = n - 1. - Eric Desbiaux, Apr 05 2018
LINKS
FORMULA
A025476(n) = a(n+1) / a(n). - Eric Desbiaux, Jun 22 2013
MATHEMATICA
Map[Function[m, Exp[Sum[MangoldtLambda@ n, {n, m}]]/Product[x, {x, Prime@ Range@ PrimePi@ m}]], Select[Range[10^3], Or[# == 1, And[PrimePowerQ@ #, ! PrimeQ@ #]] &] ] (* Michael De Vlieger, Aug 01 2017, after Fred Daniel Kline at A045948 *)
CROSSREFS
Sequence in context: A066843 A051905 A051426 * A080375 A136253 A266079
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from James A. Sellers, May 03 2000
More terms from Michael De Vlieger, Aug 01 2017
STATUS
approved

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Last modified June 18 12:25 EDT 2024. Contains 373481 sequences. (Running on oeis4.)