349520
domain: N
Appears in sequences
- Number of n-bead necklaces with beads of 2 colors and primitive period n, when turning over is not allowed but the two colors can be interchanged.at n=24A000048
- Number of monic irreducible polynomials over GF(4) of degree n with fixed nonzero trace.at n=11A054660
- Number of primitive (period n) n-bead necklace structures using exactly two different colored beads.at n=23A056303
- n*Jacobsthal(n).at n=16A093835
- a(n) = A062401(2^n + 1).at n=19A096855
- a(n) = Sum_{k=2..n} 4^k.at n=8A247817