A033162 Begins with (3, 4); avoids 3-term arithmetic progressions.

3, 4, 6, 7, 12, 13, 15, 16, 30, 31, 33, 34, 39, 40, 42, 43, 84, 85, 87, 88, 93, 94, 96, 97, 111, 112, 114, 115, 120, 121, 123, 124, 246, 247, 249, 250, 255, 256, 258, 259, 273, 274, 276, 277, 282, 283, 285, 286, 327, 328, 330, 331, 336, 337, 339, 340, 354, 355, 357, 358, 363

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Comments

Also: Stanley sequence S(3). - M. F. Hasler, Jan 18 2016

References

• Iacobescu, F. 'Smarandache Partition Type and Other Sequences.' Bull. Pure Appl. Sci. 16E, 237-240, 1997.
• H. Ibstedt, A Few Smarandache Sequences, Smarandache Notions Journal, Vol. 8, No. 1-2-3, 1997, 170-183.

Links

• Eric Weisstein's World of Mathematics, Nonarithmetic Progression Sequence
• Index entries related to Stanley sequences

Crossrefs

a(n) = A003278(n)+2

Formula

a(n) = A005836(n)+3. - M. F. Hasler, Jan 18 2016