A109412 Semiprimes = one-term groups in the partition of the sequence of natural numbers A109411.

4, 9, 10, 21, 22, 39, 49, 62, 69, 74, 93, 94, 95, 106, 111, 115, 146, 159, 203, 218, 219, 247, 254, 259, 295, 309, 319, 326, 327, 346, 355, 358, 394, 395, 398, 403, 427, 445, 446, 447, 451, 454, 551, 581, 586, 611, 622, 623, 671, 674, 679, 687, 694, 695, 698

Offset

1,1

Links

Table of n, a(n) for n=1..55.

Crossrefs

Cf. A109411, A109825, A109826.

Sequence in context: A367855 A107621 A098144 * A061766 A109448 A177927

Adjacent sequences: A109409 A109410 A109411 * A109413 A109414 A109415

Keyword

nonn

Author

Zak Seidov, Jul 03 2005

Status

approved