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 A213014 Number of zeros following the initial 1 in n-th absolute difference of primes. 2
 0, 1, 0, 0, 0, 0, 0, 0, 6, 5, 4, 3, 2, 1, 0, 0, 1, 0, 0, 2, 1, 0, 0, 0, 3, 2, 1, 0, 0, 1, 0, 3, 2, 1, 0, 0, 6, 5, 4, 3, 2, 1, 0, 0, 1, 0, 0, 1, 0, 2, 1, 0, 1, 0, 0, 0, 0, 6, 5, 4, 3, 2, 1, 0, 2, 1, 0, 0, 2, 1, 0, 0, 1, 0, 5, 4, 3, 2, 1, 0, 1, 0, 0, 0, 0, 0, 2, 1, 0, 0, 2, 1, 0, 0, 4, 3, 2, 1, 0, 0, 0, 0, 3, 2, 1, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,9 COMMENTS Related to Gilbreath's conjecture: number of "0"s preceding the first term > 1 in the n-th row of the table A036261 (= row n of the table A036262 which starts with row 0). Gilbreath's conjecture would be violated if the initial 1 would not always be followed by some number (>= 0) of "0"s and then a "2" as the first term > 1. See also A089582. LINKS PROG (PARI) my( p=primes(150), D(v)=vecextract(v, "^1")-vecextract(v, "^-1")); while(p=abs(D(p)), for(i=2, #p, p[i] & !print1(i-2", ") & next(2)); break) CROSSREFS Sequence in context: A263879 A085664 A154007 * A022962 A023448 A307337 Adjacent sequences:  A213011 A213012 A213013 * A213015 A213016 A213017 KEYWORD nonn AUTHOR M. F. Hasler, Jun 02 2012 STATUS approved

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Last modified May 31 16:29 EDT 2020. Contains 334748 sequences. (Running on oeis4.)