login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A139259
Triangle read by rows: row n lists the digits of A139258(n), the palindromic number formed from the reflected decimal expansion of Euler's constant (or Euler-Mascheroni constant) gamma.
3
5, 5, 5, 5, 7, 5, 5, 7, 7, 5, 5, 7, 7, 7, 5, 5, 7, 7, 7, 7, 5, 5, 7, 7, 2, 7, 7, 5, 5, 7, 7, 2, 2, 7, 7, 5, 5, 7, 7, 2, 1, 2, 7, 7, 5, 5, 7, 7, 2, 1, 1, 2, 7, 7, 5, 5, 7, 7, 2, 1, 5, 1, 2, 7, 7, 5, 5, 7, 7, 2, 1, 5, 5, 1, 2, 7, 7, 5
OFFSET
1,1
COMMENTS
Also, successive digits of A139258.
EXAMPLE
Triangle begins:
....... 5
...... 5,5
..... 5,7,5
.... 5,7,7,5
... 5,7,7,7,5
CROSSREFS
Decimal expansion of gamma: A001620. Cf. A138068, A138070, A138072, A139258, A139260, A139261.
Sequence in context: A369340 A368870 A076568 * A105444 A240233 A033299
KEYWORD
easy,nonn,tabl,base
AUTHOR
Omar E. Pol, May 01 2008
STATUS
approved