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 A290496 First differences of A001751. 1
 1, 1, 1, 1, 1, 3, 1, 2, 1, 3, 2, 3, 1, 3, 3, 2, 3, 3, 1, 3, 2, 3, 1, 6, 5, 1, 2, 1, 5, 4, 2, 1, 5, 3, 1, 3, 3, 5, 3, 4, 2, 3, 1, 2, 4, 5, 4, 5, 4, 3, 3, 2, 3, 4, 3, 2, 6, 1, 5, 3, 1, 6, 5, 1, 2, 10, 2, 1, 3, 2, 3, 4, 5, 3, 4, 5, 3, 1, 2, 4, 6, 2, 10, 3, 3, 5, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,6 LINKS MATHEMATICA With[{nn = 56}, Differences@ Union@ Flatten@ {#, 2 TakeWhile[#, # < Prime[nn]/2 &]} &@ Prime@ Range@ nn] PROG (PARI) lista(nn) = {last = 2; for (n=3, nn, if (isprime(n) || (!(n%2) && isprime(n/2)), print1(n - last, ", "); last = n; ); ); } CROSSREFS Cf. A001751, A290488, A290489, A290541. Sequence in context: A029351 A178638 A340786 * A035115 A146969 A338804 Adjacent sequences:  A290493 A290494 A290495 * A290497 A290498 A290499 KEYWORD nonn AUTHOR Michel Marcus, Aug 04 2017 STATUS approved

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Last modified June 14 18:06 EDT 2021. Contains 345037 sequences. (Running on oeis4.)