A046370 Numbers with exactly 4 palindromic prime factors (counted with multiplicity).

16, 24, 36, 40, 54, 56, 60, 81, 84, 88, 90, 100, 126, 132, 135, 140, 150, 189, 196, 198, 210, 220, 225, 250, 294, 297, 308, 315, 330, 350, 375, 441, 462, 484, 490, 495, 525, 550, 625, 686, 693, 726, 735, 770, 808, 825, 875, 1029, 1048, 1078, 1089, 1155, 1208

Offset

1,1

Links

Andrew Howroyd, Table of n, a(n) for n = 1..1000

Crossrefs

Intersection of A033620 and A014613.

Cf. A046402.

Sequence in context: A014613 A323350 A307341 * A376704 A103248 A286195

Adjacent sequences: A046367 A046368 A046369 * A046371 A046372 A046373

Keyword

nonn,base

Author

Patrick De Geest, Jun 15 1998

Extensions

Offset changed by Andrew Howroyd, Aug 14 2024

Status

approved