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

0,1

COMMENTS

A007632: Palindromic in bases 2 and 10.

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: A144675 A088417 A050880 * A053663 A022430 A189666

Adjacent sequences:  A120761 A120762 A120763 * A120765 A120766 A120767

KEYWORD

more,nonn

AUTHOR

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

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Last modified February 17 17:35 EST 2012. Contains 206061 sequences.