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 A190838 Initial primes of 8 consecutive primes with 7 consecutive gaps 2, 4, 6, 8, 10, 12, 14. 12
 128981, 21456047, 34864211, 51867197, 55793951, 69726647, 113575727, 180078317, 207664397, 232728647, 342241967, 382427027, 382533311, 470463011, 558791327, 591360851, 603413801, 749930717, 838115711, 926976431, 965761397, 1007421251, 1109867567, 1278189947 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(1) = 128981 = A190819(1), a(2) = 21456047 = A190819(14). a(n) + 56 is the greatest term in the sequence of 8 consecutive primes with 7 consecutive gaps 2, 4, 6, 8, 10, 12, 14. - Muniru A Asiru, Aug 10 2017 LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 MAPLE N:=10^8: # to get all terms <= N. Primes:=select(isprime, [seq(i, i=3..N+56, 2)]): Primes[select(t->[Primes[t+1]-Primes[t], Primes[t+2]-Primes[t+1], Primes[t+3]-Primes[t+2], Primes[t+4]-Primes[t+3], Primes[t+5]- Primes[t+4], Primes[t+6]-Primes[t+5] , Primes[t+7]-Primes[t+6] ]= [2, 4, 6, 8, 10, 12, 14], [\$1..nops(Primes)-7])]; # Muniru A Asiru, Aug 04 2017 MATHEMATICA Transpose[Select[Partition[Prime[Range[65000000]], 8, 1], Differences[#] =={2, 4, 6, 8, 10, 12, 14}&]][[1]] (* Harvey P. Dale, May 10 2014 *) PROG (PARI) list(lim)=my(v=List(), p=128981, t); forprime(q=p+2, lim+56, if(q-p-t==2, t+=2; if(t==14, listput(v, q-56); t=0), t=0); p=q); Vec(v) \\ Charles R Greathouse IV, Aug 10 2017 CROSSREFS Subsequence of A190819. Subsequence of A187060. - Michel Marcus, Aug 10 2017 Cf. A078847, A190814, A190817. Sequence in context: A151812 A224585 A190819 * A237072 A232122 A232420 Adjacent sequences: A190835 A190836 A190837 * A190839 A190840 A190841 KEYWORD nonn AUTHOR Zak Seidov, May 21 2011 EXTENSIONS Additional cross references from Harvey P. Dale, May 10 2014 STATUS approved

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Last modified November 29 02:32 EST 2022. Contains 358421 sequences. (Running on oeis4.)