29171
domain: N
Appears in sequences
- Numbers k such that 21*2^k - 1 is prime.at n=26A002238
- Number of elements w of the Weyl group D(n) such that the roots sent negative by w span an Abelian subalgebra of the Lie algebra.at n=8A007851
- a(1)=1, a(n)=a(n-1)+n^3 if n odd, a(n)=a(n-1)+ n^0 if n is even.at n=20A140152
- Totally multiplicative sequence with a(p) = a(p-1) + 10 for prime p.at n=28A166707
- n for which A079277(n) + phi(n) < n.at n=24A208815
- Number of nonconsecutive chess tableaux with n cells.at n=19A238020