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A072760 Smallest of 7 consecutive integers divisible respectively by 7 consecutive primes. 0
210998, 466254, 721508, 1232018, 1742528, 2253038, 2763548, 3274058, 3784568, 4295078, 4805588, 5316098, 5316099, 5826608, 6337118, 6847628, 7358138, 7868648, 8379158, 8889668, 9400178, 9910688, 10165944, 10421198, 10931708 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..25.

EXAMPLE

210998 is a term as 210998, 210999, 211000, 211001, 211002, 211003 and 211004 are divisible by 2, 3, 5, 7, 11, 13 and 17 respectively.

MATHEMATICA

f[n_Integer] := Flatten[ Table[ #1] & @@@ FactorInteger[n]]; NextPrim[n_] := Block[ {k = n + 1}, While[ !PrimeQ[k], k++ ]; k]; Do[ p = f[ n ]; l = Length[ p ]; t = Table[n + i, {i, 0, 6} ]; k = 1; While[ k < l + 1 && Union[ Mod[ t, NestList[ NextPrim, p[[ k ]], 6 ]]] != {0}, k++ ]; If[ k < l + 1, Print[ n ]], {n, 2, 811597} ]

CROSSREFS

Cf. A073606, A073607, A072555, A073754, A073755 and A072562.

Sequence in context: A015376 A216593 A172825 * A178421 A069175 A097021

Adjacent sequences:  A072757 A072758 A072759 * A072761 A072762 A072763

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Aug 08 2002

STATUS

approved

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Last modified April 22 14:33 EDT 2019. Contains 322356 sequences. (Running on oeis4.)