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A076928
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a(1) = 1, a(n+1)= a(n)*(n+1) divided by the largest prime divisor of n+1.
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2
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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; internal format)
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OFFSET
| 1,4
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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);
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MATHEMATICA
| nxt[{a_, b_}]:={a(b+1)/FactorInteger[b+1][[-1, 1]], b+1}; Transpose[ NestList[ nxt[#]&, {1, 1}, 40]][[1]] (* From Harvey P. Dale, Aug 11 2011 *)
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CROSSREFS
| Cf. A076929.
Sequence in context: A086117 A095240 A110428 * A025557 A059372 A161422
Adjacent sequences: A076925 A076926 A076927 * A076929 A076930 A076931
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KEYWORD
| nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 18 2002
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EXTENSIONS
| Corrected and extended by Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 21 2003
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