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 A076928 a(1) = 1, a(n+1)= a(n)*(n+1) divided by the largest prime divisor of n+1. 2
 1, 1, 1, 2, 2, 4, 4, 16, 48, 96, 96, 384, 384, 768, 2304, 18432, 18432, 110592, 110592, 442368, 1327104, 2654208, 2654208, 21233664, 106168320, 212336640, 1911029760, 7644119040, 7644119040, 45864714240, 45864714240, 733835427840 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS MAPLE a[1] := 1:for n from 2 to 100 do q := ifactors(n)[2]:a[n] := n*a[n-1]/q[nops(q)][1]: od:seq(a[j], j=1..100); MATHEMATICA nxt[{a_, b_}]:={a(b+1)/FactorInteger[b+1][[-1, 1]], b+1}; Transpose[ NestList[ nxt[#]&, {1, 1}, 40]][[1]] (* Harvey P. Dale, Aug 11 2011 *) CROSSREFS Cf. A076929. Sequence in context: A086117 A095240 A110428 * A286737 A025557 A285909 Adjacent sequences:  A076925 A076926 A076927 * A076929 A076930 A076931 KEYWORD nonn AUTHOR Amarnath Murthy, Oct 18 2002 EXTENSIONS Corrected and extended by Sascha Kurz, Jan 21 2003 STATUS approved

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Last modified December 15 22:02 EST 2019. Contains 330012 sequences. (Running on oeis4.)