70005
domain: N
Appears in sequences
- Numbers n such that n and n+-1 have 4 distinct prime factors.at n=13A168628
- G.f.: 1/(1 - x/(1 - x^2/(1 - x^5/(1 - x^12/(1 - x^29/(1 - x^70/(1 -...- x^Pell(n)/(1 -...)))))))), a continued fraction.at n=24A206743
- A(n, k) = A309522(n, k) - A327001(n, k) for n >= 0 and k >= 3, square array read by ascending antidiagonals.at n=16A327000
- Number of distinct resistances that can be produced using n unit resistors in series, parallel, bridge or fork configurations.at n=12A337516