A269724 - OEIS

A269724

Numbers which contain no 2's when written in bases 3 through 10.

0, 1, 3, 4, 31, 58130496, 58130499, 58130500, 58130703, 58183951, 77810815551163745898450783, 77810815551163745898451143, 61819635578801174196008456415, 61819635578801174196008574451, 61819635578801174196008574771

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

There are 134 known terms. If a(135) exists, it must exceed 10^2300.

LINKS

Nathan Fox, Table of n, a(n) for n = 1..134

PROG

(PARI) isok(n) = {for (b=3, 10, d = digits(n, b); if (vecsearch(vecsort(d, , 8), 2), return (0)); ); 1; } \\ Michel Marcus, Mar 06 2016

CROSSREFS

Cf. A216192, A216194.

Sequence in context: A042653 A219679 A042431 * A296250 A032834 A025140

Adjacent sequences: A269721 A269722 A269723 * A269725 A269726 A269727

KEYWORD

nonn,base

AUTHOR

Nathan Fox, Mar 03 2016

STATUS

approved