A099847 Bisection of A000961.

2, 4, 7, 9, 13, 17, 23, 27, 31, 37, 43, 49, 59, 64, 71, 79, 83, 97, 103, 109, 121, 127, 131, 139, 151, 163, 169, 179, 191, 197, 211, 227, 233, 241, 251, 257, 269, 277, 283, 293, 311, 317, 337, 347, 353, 361, 373, 383, 397, 409, 421, 433, 443, 457, 463, 479, 491

Offset

1,1

Links

Table of n, a(n) for n=1..57.

Maple

a:=proc(n) if nops(ifactors(n)[2])=1 then n else fi end: A:=[seq(a(n), n=1..580)]: seq(A[2*k-1], k=1..nops(A)/2); # Emeric Deutsch, Dec 18 2004

Crossrefs

Cf. A000961, A099836.

Sequence in context: A183873 A036386 A280417 * A014817 A326502 A090893

Adjacent sequences: A099844 A099845 A099846 * A099848 A099849 A099850

Keyword

nonn,easy

Author

N. J. A. Sloane, Nov 19 2004

Extensions

More terms from Emeric Deutsch, Dec 18 2004

Status

approved