494211
domain: N
Appears in sequences
- Recip transform of 2*(1 + x^5)-1/(1-x).at n=10A049155
- Squarefree products of factors of Fermat numbers (A023394).at n=32A094358
- Numbers k such that k and k^2 use only the digits 1, 2, 4, 5 and 9.at n=25A136991
- a(n) = 10*a(n-3) - a(n-6) + 4 for n>5, a(0)=2, a(1)=3, a(2)=5, a(3)=12, a(4)=29, a(5)=51.at n=17A233231
- a(n) is the smallest composite n-Lehmer number.at n=14A234936