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A054264 Concatenation of composite numbers between successive primes. 4
4, 6, 8910, 12, 141516, 18, 202122, 2425262728, 30, 3233343536, 383940, 42, 444546, 4849505152, 5455565758, 60, 6263646566, 686970, 72, 7475767778, 808182, 8485868788, 90919293949596, 9899100, 102, 104105106, 108, 110111112 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..27.

MATHEMATICA

FromDigits[Flatten[IntegerDigits/@(Range[#[[1]]+1, #[[2]]-1])]]&/@Partition[ Prime[Range[2, 30]], 2, 1] (* Harvey P. Dale, Mar 04 2014 *)

CROSSREFS

Cf. A046933, A054265, A054266, A054267, A054268.

Sequence in context: A323214 A061214 A137024 * A077305 A146294 A133982

Adjacent sequences:  A054261 A054262 A054263 * A054265 A054266 A054267

KEYWORD

nonn,base,easy

AUTHOR

Patrick De Geest, Apr 15 2000.

STATUS

approved

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Last modified October 18 15:41 EDT 2019. Contains 328162 sequences. (Running on oeis4.)