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A138722 Concatenation of p digits 1, p digits 0 and p digits 1, where p is the n-th prime. 5
110011, 111000111, 111110000011111, 111111100000001111111, 111111111110000000000011111111111, 111111111111100000000000001111111111111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Cf. A000040, A138149, A138721.

Sequence in context: A111888 A183770 A023349 * A122240 A187114 A145872

Adjacent sequences:  A138719 A138720 A138721 * A138723 A138724 A138725

KEYWORD

base,easy,nonn

AUTHOR

Omar E. Pol, Mar 29 2008

STATUS

approved

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Last modified October 31 21:39 EDT 2014. Contains 248871 sequences.