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A068826
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a(1) = 2; then the sequence of smallest primes (no zero digits to avoid ambiguity) not included earlier the concatenation of which is the cyclic pattern 23456789123456789123...
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2, 3, 4567, 89, 1234567891, 23, 4567891, 23456789, 1234567891234567891234567891, 23456789123456789, 1234567891234567891234567891234567891234567891234567891234567891234567, 89123, 4567891234567
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| a(14)=89123456789123...789123 (527 digits), a(15)= 4567891234567891234567891, a(16)=23456789123456789123, a(17)=4...1 (61 digits) and a(18)=2...3 (38 digits). a(9) through a(11) and a(13) through a(18) have been certified prime with Primo. a(19)=4... has at least 2700 digits. - Rick L. Shepherd
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CROSSREFS
| Sequence in context: A020345 A085943 A068661 * A085944 A137078 A146026
Adjacent sequences: A068823 A068824 A068825 * A068827 A068828 A068829
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 08 2002
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EXTENSIONS
| More terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 25 2002
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