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A176984
Numbers k such that the k-th average of twin prime pairs is a sum of two successive primes.
2
3, 4, 5, 6, 7, 11, 15, 17, 24, 27, 28, 31, 33, 35, 42, 44, 46, 47, 49, 52, 53, 55, 58, 64, 65, 76, 81, 88, 91, 99, 104, 107, 112, 113, 117, 118, 129, 131, 132, 135, 136, 138, 144, 146, 148, 150, 152, 153, 154, 156, 157, 162, 167, 170, 172, 173, 176, 180, 190, 192, 194
OFFSET
1,1
LINKS
FORMULA
{k: A014574(k) in A001043}. - R. J. Mathar, Apr 30 2010
A014574(a(n)) = A167597(n). - Amiram Eldar, Jan 21 2020
MAPLE
From R. J. Mathar, Apr 30 2010: (Start)
isA001043 := proc(n) for k from 1 do ps := ithprime(k)+ithprime(k+1) ; if ps >n then return false; elif ps= n then return true; end if ; end do; end proc:
for n from 1 to 800 do if isA001043(A014574(n) ) then printf("%d, ", n) ; end if; end do: (End)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(42) corrected and sequence extended by R. J. Mathar, Apr 30 2010
STATUS
approved