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A384793
a(n) is the start of the first occurrence of exactly n consecutive zeroless primes (A038618).
3
461717, 162119, 75431, 81421, 19661, 5923, 4813, 1319, 2917, 1117, 1721, 521, 911, 613, 311, 11519, 25411, 7321, 7717, 8819, 9413, 5519, 9613, 2311, 2, 41213, 16319, 1423, 21121, 8219, 162221, 71233, 113, 68521, 148627, 192611, 86531, 48413, 269219, 13313, 275521, 11113, 111521
OFFSET
1,1
LINKS
EXAMPLE
a(25) = 2 because the 25 primes 2, 3, ..., 97 don't have a zero in their decimal representation, terminated by 101.
a(1) = 461717 because it is the smallest zeroless prime, whose nearest lower and upper prime neighbors 461707 and 461801 both have at least one zero in their decimal representation.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Hugo Pfoertner, based on an idea by René-Louis Clerc, Jun 20 2025
STATUS
approved