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 A290162 Initial primes of 8 consecutive primes with 7 consecutive gaps 14, 12, 10, 8, 6, 4, 2. 4
 5647457, 18117977, 21705503, 32465063, 37091597, 57269633, 90217163, 109933673, 111053573, 124123133, 145594583, 146742863, 163123997, 200416343, 239659907, 245333267, 272213813, 335971367, 350795033, 470838833, 701465327, 749927357, 888801707, 1060690667 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS All terms = {17,23} mod 30. For initial primes of 8 consecutive primes with consecutive gaps 2, 4, 6, 8, 10, 12, 14 see A190838. LINKS Chai Wah Wu, Table of n, a(n) for n = 1..200 EXAMPLE Prime(390215..390222) = {5647457, 5647471, 5647483, 5647493, 5647501, 5647507, 5647511, 5647513} and 5647457 + 14 = 5647471, 5647471 + 12 = 5647483, 5647483 + 10 = 5647493, 5647493 + 8 = 5647501, 5647501 + 6 = 5647507, 5647507 + 4 = 5647511, 5647511 + 2 = 5647513. PROG P:=Filtered([1..100000000], IsPrime);; I:=Reversed([2, 4, 6, 8, 10, 12, 14]);; P1:=List([1..Length(P)-1], i->P[i+1]-P[i]);; Collected(last);; P2:=List([1..Length(P)-Length(I)], i->[P1[i], P1[i+1], P1[i+2], P1[i+3], P1[i+4], P1[i+5], P1[i+6]]);; P3:=List(Positions(P2, I), i->P[i]); Length(P3); CROSSREFS Cf. A078847, A190814, A190817, A190819, A190838, A286891, A290161. Sequence in context: A258536 A258529 A254921 * A251018 A254388 A254395 Adjacent sequences: A290159 A290160 A290161 * A290163 A290164 A290165 KEYWORD nonn AUTHOR Muniru A Asiru, Jul 22 2017 EXTENSIONS a(8)-a(24) from Giovanni Resta, Jul 25 2017 STATUS approved

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Last modified February 20 21:52 EST 2024. Contains 370219 sequences. (Running on oeis4.)