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A261510 Triangle-congruent primes greater than 10 with a single digit at the center. 0
1111211111, 1111411111, 3333133333, 9999499999, 1111111111112111111111111111, 1111311331137311333311111111, 1111411441142411444411111111, 1111611661167611666611111111, 1111811881185811888811111111, 3333033003305033000033333333, 3333133113312133111133333333 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A050758.

LINKS

Table of n, a(n) for n=1..11.

G. L. Honaker, Jr. and C. Caldwell, 1111211111

EXAMPLE

a(6) can be represented as follows:

......1

.....1 1

....1 3 1

...1 3 3 1

..1 3 7 3 1

.1 3 3 3 3 1

1 1 1 1 1 1 1

CROSSREFS

Cf. A050758.

Sequence in context: A272029 A095425 A038452 * A034650 A035525 A184152

Adjacent sequences:  A261507 A261508 A261509 * A261511 A261512 A261513

KEYWORD

nonn,base

AUTHOR

Felix Fröhlich, Aug 22 2015

STATUS

approved

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Last modified August 14 13:57 EDT 2020. Contains 336481 sequences. (Running on oeis4.)