A283611 Numbers whose largest decimal digit is 8.

8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 108, 118, 128, 138, 148, 158, 168, 178, 180, 181, 182, 183, 184, 185, 186, 187, 188, 208, 218, 228, 238, 248, 258, 268, 278, 280, 281, 282, 283, 284, 285, 286, 287, 288, 308, 318, 328, 338, 348

Offset

1,1

Comments

Numbers n such that A054055(n) = 8.

Number of terms less than 10^n is 9^n - 8^n.

Prime terms are in A106094.

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

f:= proc(n) local L;
  L:= convert(n, base, 9);
  if not has(L, 8) then return NULL fi;
  add(L[i]*10^(i-1), i=1..nops(L))
end proc:
map(f, [$8..1000]); # Robert Israel, Mar 27 2017

Mathematica

Select[Range@ 350, Max@ IntegerDigits@ # == 8 &] (* Michael De Vlieger, Mar 25 2017 *)

Prog

(Magma) [n: n in [1..100000] | Maximum(Setseq(Set(Sort(&cat[Intseq(n)])))) eq 8]
(PARI) isok(n) = vecmax(digits(n)) == 8; \\ Michel Marcus, Mar 25 2017
(GAP) Filtered([1..400], n->Maximum(ListOfDigits(n))=8); # Muniru A Asiru, Mar 01 2019

Crossrefs

Cf. Sequences of numbers whose largest decimal digit is k (for k = 1..9): A007088 (k = 1), A277964 (k = 2), A277965 (k = 3), A277966 (k = 4), A283608 (k = 5), A283609 (k = 6), A283610 (k = 7), this sequence (k = 8), A011539 (k = 9).

Sequence in context: A347995 A248015 A011538 * A043521 A277595 A017365

Adjacent sequences: A283608 A283609 A283610 * A283612 A283613 A283614

Keyword

nonn,base

Author

Jaroslav Krizek, Mar 19 2017

Status

approved