

A120764


Number of terms of A007632 less than or equal to 10^n.


2



2, 6, 8, 11, 13, 19, 20, 27, 28, 31, 33, 37, 39, 49, 50, 52, 54, 61, 63, 65, 68, 70, 70, 74, 74, 80, 81, 87, 88, 93, 94, 96, 96, 99, 102, 108, 112, 117, 118, 121, 122
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OFFSET

0,1


COMMENTS

A007632: Palindromic in bases 2 and 10.


LINKS

Table of n, a(n) for n=0..40.


EXAMPLE

a(4)=13 because {0, 1, 3, 5, 7, 9, 33, 99, 313, 585, 717, 7447, 9009} are all the terms of A007632 less than 10^4.


MATHEMATICA

lst = { (* the list of terms from A007632 *) }; Table[ Length@ Select[lst, # <= 10^n &], {n, 0, 33}]


CROSSREFS

Cf. A007632.
Sequence in context: A088417 A050880 A182424 * A022430 A189666 A298474
Adjacent sequences: A120761 A120762 A120763 * A120765 A120766 A120767


KEYWORD

more,nonn,base


AUTHOR

Charlton Harrison (charlton(AT)bach.dynet.com) and Robert G. Wilson v, Jul 03 2006


EXTENSIONS

a(34)  a(40) from Robert G. Wilson v, Jun 19 2014


STATUS

approved



