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A052085 Primes whose decimal expansion digits are grouped together. 6
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 103, 107, 109, 113, 127, 137, 139, 149, 157, 163, 167, 173, 179, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..58.

EXAMPLE

E.g. 101 is not OK since the two digits 1 are separated by the 0. Prime 233 is OK since the digits 2 and 3 are grouped.

CROSSREFS

Cf. A052086, A052081, A052082, A052083, A052084.

Sequence in context: A049549 A030291 A242541 * A082646 A231588 A038618

Adjacent sequences:  A052082 A052083 A052084 * A052086 A052087 A052088

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jan 15 2000.

STATUS

approved

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Last modified September 16 02:16 EDT 2019. Contains 327088 sequences. (Running on oeis4.)