login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A135602 Right-angled numbers with an internal digit as the vertex. 11
101, 121, 212, 232, 323, 343, 434, 454, 545, 565, 656, 676, 767, 787, 878, 898, 989, 1012, 1210, 1232, 2101, 2123, 2321, 2343, 3212, 3234, 3432, 3454, 4323, 4345, 4543, 4565, 5434, 5456, 5654, 5676, 6545, 6567, 6765, 6787, 7656, 7678 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The structure of digits represent an right angle. The vertex is an internal digit. In the graphic representation the points are connected by imaginary line segments from left to right. This sequence is finite. The last member has 19 digits: 9876543210123456789.

LINKS

Jens Kruse Andersen, Table of n, a(n) for n = 1..525

EXAMPLE

Illustration using the last member of this sequence:

9 . . . . . . . . . . . . . . . . . 9

. 8 . . . . . . . . . . . . . . . 8 .

. . 7 . . . . . . . . . . . . . 7 . .

. . . 6 . . . . . . . . . . . 6 . . .

. . . . 5 . . . . . . . . . 5 . . . .

. . . . . 4 . . . . . . . 4 . . . . .

. . . . . . 3 . . . . . 3 . . . . . .

. . . . . . . 2 . . . 2 . . . . . . .

. . . . . . . . 1 . 1 . . . . . . . .

. . . . . . . . . 0 . . . . . . . . .

CROSSREFS

Cf. A134810, A134853, A134941, A134970, A135641, A135642, A135643, A135600, A135601, A135603.

Sequence in context: A046075 A088882 A261453 * A095635 A060916 A075793

Adjacent sequences:  A135599 A135600 A135601 * A135603 A135604 A135605

KEYWORD

base,fini,full,nonn

AUTHOR

Omar E. Pol, Dec 02 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 31 15:39 EDT 2020. Contains 338110 sequences. (Running on oeis4.)