A034055 Numbers with multiplicative digital root value 8.

8, 18, 24, 29, 36, 38, 42, 46, 49, 63, 64, 66, 67, 76, 77, 79, 81, 83, 88, 92, 94, 97, 99, 118, 124, 129, 136, 138, 142, 146, 149, 163, 164, 166, 167, 176, 177, 179, 181, 183, 188, 192, 194, 197, 199, 214, 219, 222, 226, 229, 233, 234, 236, 237, 241, 243, 248

Offset

1,1

Links

Table of n, a(n) for n=1..57.

Eric Weisstein's World of Mathematics, Multiplicative Digital Root

Index entries for 10-automatic sequences.

Mathematica

dr8Q[n_]:=NestWhile[Times@@IntegerDigits[#]&, n, #>9&]==8; Select[ Range[ 250], dr8Q] (* Harvey P. Dale, Jun 10 2011 *)

Crossrefs

Cf. A031347.

Cf. A034048, A002275, A034049, A034050, A034051, A034052, A034053, A034054, A034055, A034056 (numbers having multiplicative digital roots 0-9).

Sequence in context: A242185 A273527 A051810 * A043101 A171607 A039278

Adjacent sequences: A034052 A034053 A034054 * A034056 A034057 A034058

Keyword

nonn,base,easy

Author

Patrick De Geest, Sep 15 1998

Status

approved