OFFSET
1,2
LINKS
N. J. A. Sloane, Transforms
MATHEMATICA
f[n_] := Block[{k = 1}, While[p = Table[ Prime[i], {i, n, n + k}]; Length[ Union[Drop[p, 1] - Drop[p, -1]]] == k, k++ ]; k - 1]; a = Table[0, {50}]; Do[b = f[n]; If[ a[[b]] == 0, a[[b]] = n], {n, 1, 19000000}]
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 07 2003
EXTENSIONS
More terms from Robert G. Wilson v and Klaus Brockhaus, Jan 08 2003
a(21)-a(27) from Donovan Johnson, Oct 23 2012
STATUS
approved