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”).

A322092
Digits of one of the two 13-adic integers sqrt(-3).
7
7, 9, 0, 6, 2, 5, 8, 8, 3, 4, 3, 10, 4, 7, 0, 9, 7, 8, 12, 6, 7, 11, 10, 6, 7, 3, 8, 3, 11, 11, 8, 6, 1, 9, 11, 0, 7, 10, 10, 6, 9, 1, 1, 4, 8, 7, 2, 2, 5, 3, 7, 5, 5, 5, 4, 12, 11, 12, 5, 5, 12, 3, 0, 2, 4, 11, 6, 11, 10, 2, 10, 3, 5, 10, 11, 2, 1, 8, 9, 7, 6
OFFSET
0,1
COMMENTS
This square root of -3 in the 13-adic field ends with digit 7. The other, A322091, ends with digit 6.
FORMULA
a(n) = (A322090(n+1) - A322090(n))/13^n.
For n > 0, a(n) = 12 - A322091(n).
This 13-adic integer is the 13-adic limit as n -> oo of the integer sequence {L(13^n,7)}, where L(n,x) denotes the n-th Lucas polynomial, the n-th row polynomial of A114525. - Peter Bala, Dec 05 2022
EXAMPLE
...96AA70B9168BB38376AB76C879074A34388526097.
PROG
(PARI) a(n) = truncate(-sqrt(-3+O(13^(n+1))))\13^n
KEYWORD
nonn,base,easy
AUTHOR
Jianing Song, Nov 26 2018
STATUS
approved