A397628 a(n) = prime(A026352(n)).

5, 13, 19, 31, 43, 53, 67, 73, 89, 103, 109, 131, 149, 157, 173, 181, 197, 223, 229, 241, 257, 271, 283, 307, 317, 347, 353, 373, 383, 401, 421, 433, 449, 463, 479, 499, 509, 541, 563, 571, 593, 601, 617, 641, 647, 661, 683, 701, 727, 739, 757, 773, 797, 821

Offset

1,1

Comments

This sequence and A397627 partition A000040.

Links

Table of n, a(n) for n=1..54.

Mathematica

r = GoldenRatio; t = Table[If[FractionalPart[n*r] <= FractionalPart[r], 0, 1], {n, 1, 120}]
Prime[Flatten[Position[t, 0]]]

Crossrefs

Cf. A000040, A026351, A026352, A397623, A397628.

Sequence in context: A356833 A166575 A265808 * A265790 A002540 A290515

Adjacent sequences: A397625 A397626 A397627 * A397629 A397630 A397631

Keyword

nonn,easy,new

Author

Clark Kimberling, Jul 15 2026

Status

approved