A072440 3-smooth numbers k with decimal digits <= 3.

1, 2, 3, 12, 32, 13122

Offset

1,2

Comments

Possibly the sequence is finite/full (?next term > 10^11).

No more terms less than 10^10000. - David Radcliffe, Aug 04 2021

Links

Table of n, a(n) for n=1..6.

Example

Digits of 13122 are <= 3 and 13122=2*3^8, therefore 13122 is a term.

Mathematica

Flatten[Table[Select[Times@@@Tuples[{2, 3}, n], Max[IntegerDigits[#]]<4&], {n, 0, 10}]]//Union (* Harvey P. Dale, Jul 05 2024 *)

Crossrefs

Cf. A003586.

Sequence in context: A034381 A076424 A165301 * A135522 A353831 A377705

Adjacent sequences: A072437 A072438 A072439 * A072441 A072442 A072443

Keyword

nonn,base,more

Author

Reinhard Zumkeller, Aug 01 2002

Extensions

Definition corrected by Georg Fischer, Aug 04 2021

Status

approved