A086943 Integers k such that R(k+7) = 3.

23, 293, 2993, 29993, 299993, 2999993, 29999993, 299999993, 2999999993, 29999999993, 299999999993, 2999999999993, 29999999999993, 299999999999993, 2999999999999993, 29999999999999993, 299999999999999993

Offset

1,1

Comments

R(a(n)) = A086942(n).

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..300

Formula

a(n) = 3*10^n - 7.

Mathematica

FromDigits/@Table[Join[{2}, Table[9, {n}], {3}], {n, 0, 20}] (* Harvey P. Dale, Aug 21 2011 *)

Prog

(Magma) [3*10^n-7: n in [1..25] ]; // Vincenzo Librandi, Aug 22 2011
(Maxima) A086943(n):=3*10^n-7$
makelist(A086943(n), n, 1, 17); /* Martin Ettl, Nov 08 2012 */

Crossrefs

Cf. A004086, A086942.

Sequence in context: A268992 A199031 A125435 * A131273 A023021 A022651

Adjacent sequences: A086940 A086941 A086942 * A086944 A086945 A086946

Keyword

nonn,base,easy

Author

Ray Chandler, Jul 24 2003

Status

approved