A309609 Digits of the 10-adic integer (23/9)^(1/3).
3, 6, 2, 9, 7, 6, 0, 4, 7, 4, 2, 3, 4, 9, 0, 2, 1, 6, 5, 5, 4, 5, 9, 7, 3, 3, 2, 6, 4, 9, 6, 0, 0, 6, 4, 9, 5, 3, 2, 3, 1, 9, 6, 3, 3, 0, 5, 6, 1, 1, 4, 7, 2, 3, 1, 6, 2, 5, 7, 9, 9, 7, 3, 5, 1, 0, 8, 4, 2, 0, 2, 6, 3, 1, 6, 8, 2, 6, 4, 8, 4, 3, 4, 5, 9, 5, 3, 8, 9, 8, 6, 5, 7, 9, 1, 7, 2, 7, 6, 1
Offset: 0
Examples
3^3 == 7 (mod 10). 63^3 == 47 (mod 10^2). 263^3 == 447 (mod 10^3). 9263^3 == 4447 (mod 10^4). 79263^3 == 44447 (mod 10^5). 679263^3 == 444447 (mod 10^6).
Links
- Seiichi Manyama, Table of n, a(n) for n = 0..10000
Programs
Formula
Define the sequence {b(n)} by the recurrence b(0) = 0 and b(1) = 3, b(n) = b(n-1) + 3 * (9 * b(n-1)^3 - 23) mod 10^n for n > 1, then a(n) = (b(n+1) - b(n))/10^n