A309334 Lucky prime gaps: differences between consecutive lucky primes.
4, 6, 18, 6, 6, 24, 6, 6, 48, 24, 12, 30, 18, 12, 18, 42, 24, 24, 18, 18, 42, 12, 12, 30, 24, 54, 36, 24, 12, 6, 12, 12, 30, 54, 12, 30, 18, 36, 60, 54, 54, 6, 12, 12, 18, 48, 6, 24, 6, 78, 30, 18, 42, 12, 156, 12, 72, 24, 12, 18, 66, 30, 30, 54, 24, 30, 48, 54
Offset: 1
Keywords
Examples
a(1) = 4 because difference between the first (3) and second (7) lucky prime is 4. a(2) = 6 because difference between 7 and 13 is 6.
Links
- Robert Israel, Table of n, a(n) for n = 1..10000
Programs
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Maple
N:= 10^4: # for lucky primes up to 2*N+1 L:= [seq(2*i+1, i=0..N)]: for n from 2 while n < nops(L) do r:= L[n]; L:= subsop(seq(r*i=NULL, i=1..nops(L)/r), L); od: LP:= select(isprime,L): LP[2..-1]-LP[1..-2]; # Robert Israel, Jul 26 2019
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SageMath
[A031157[i+1]-A031157[i] for i in range(100)]
Comments