84101
domain: N
Appears in sequences
- a(n) = 1 + a(floor(n/2))*a(ceiling(n/2)) for n > 1, a(1) = 4.at n=7A005511
- Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1111-0001 pattern in any orientation.at n=11A146609
- a(n) = (n^2+1)^2+1.at n=17A178390
- A239459(n) / n.at n=28A239462
- a(n) = 1 + 100*n^2 for n >= 0.at n=29A323178
- Numbers whose arithmetic derivative (A003415) is a primorial number (A002110) > 1.at n=27A327978