A162199 Odd cyclops numbers.

101, 103, 105, 107, 109, 201, 203, 205, 207, 209, 301, 303, 305, 307, 309, 401, 403, 405, 407, 409, 501, 503, 505, 507, 509, 601, 603, 605, 607, 609, 701, 703, 705, 707, 709, 801, 803, 805, 807, 809, 901, 903, 905, 907, 909, 11011, 11013, 11015, 11017

Offset

1,1

Links

Table of n, a(n) for n=1..49.

Maple

isA134808 := proc(n) local dgs, ndgs, d ; dgs := convert(n, base, 10) ; ndgs := nops(dgs) ; if ndgs mod 2 = 0 then false; else for d from 1 to ndgs do if d = (ndgs+1)/2 and op(d, dgs) <> 0 then RETURN(false); elif d <> (ndgs+1)/2 and op(d, dgs) = 0 then RETURN(false); fi; od: true; fi; end: for n from 1 to 11100 by 2 do if isA134808(n) then printf("%d, ", n) ; fi; od: # R. J. Mathar, Jul 13 2009

Crossrefs

Cf. A134808, A134809, A162198.

Sequence in context: A162671 A230094 A030474 * A195469 A210758 A225082

Adjacent sequences: A162196 A162197 A162198 * A162200 A162201 A162202

Keyword

easy,nonn

Author

Omar E. Pol, Jul 04 2009

Extensions

More terms from R. J. Mathar, Jul 13 2009

Status

approved