A076977 - OEIS

A076977

Product of the largest prime divisors of composite numbers between successive primes.

1, 2, 3, 30, 3, 70, 3, 385, 4095, 5, 7854, 1235, 7, 1265, 23205, 127281, 5, 62062, 2737, 3, 502645, 615, 1632323, 124158255, 385, 17, 4823, 3, 2849, 24662087802577225, 1118, 1190255, 23, 499504581303, 5, 1431859, 1444515, 37433, 1263899, 11725483

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OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

MATHEMATICA

plpd[l_]:=Times@@(FactorInteger[#][[-1, 1]]&/@l); plpd/@(Range[#[[1]]+1, #[[2]]-1]&/@Partition[Prime[Range[50]], 2, 1]) (* Harvey P. Dale, Sep 02 2020 *)

CROSSREFS

Cf. A076976.

Sequence in context: A350868 A270550 A366477 * A328833 A109886 A277811

Adjacent sequences: A076974 A076975 A076976 * A076978 A076979 A076980

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Oct 23 2002

EXTENSIONS

More terms from Sascha Kurz, Jan 22 2003

STATUS

approved