User:Russ Cox

Russ Cox's first submitted OEIS sequence was A000532, which was the sequence computed by a programming contest puzzle.

User:Russ Cox/OEIS Server Features

Testing math: $a{x}^2+bx+c=0$

More testing:

     

a 0  =  k, k ∈ ℕ +; an  =  s1(an  − 1 ), n ≥ 1.

OR ELSE

$\begin{array}{rl}{a}_0& =k,k\in {\mathbb{\mathbb{N}}}^{+};\\ a_n& =s_1(a_{n-1}),n\ge 1.\\ \end{array}$

Test Russ Cox (talk) 11:28, 8 October 2025 (UTC)

Test 2 Russ Cox (talk) 07:31, 8 October 2025 (EDT)