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

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