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A135603 Obtuse-angled numbers with an internal digit as the vertex. 9
100, 110, 112, 113, 114, 115, 116, 117, 118, 119, 122, 124, 125, 126, 127, 128, 129, 133, 134, 136, 137, 138, 139, 144, 145, 146, 148, 149, 155, 156, 157, 158, 166, 167, 168, 169, 177, 178, 179, 188, 189, 199, 200, 211, 220, 221, 223, 224 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The structure of digits represent an obtuse angle. The vertex is an internal digit. In the graphic representation the points are connected by imaginary line segments from left to right.

LINKS

Table of n, a(n) for n=1..48.

EXAMPLE

Illustration of the number 9753111:

9 . . . . . .

. . . . . . .

. 7 . . . . .

. . . . . . .

. . 5 . . . .

. . . . . . .

. . . 3 . . .

. . . . . . .

. . . . 1 1 1

. . . . . . .

CROSSREFS

Cf. A134810, A134853, A134941, A134970, A135641, A135642, A135643, A135600, A135601, A135602.

Sequence in context: A134496 A191752 A165406 * A044866 A290948 A033828

Adjacent sequences:  A135600 A135601 A135602 * A135604 A135605 A135606

KEYWORD

base,nonn

AUTHOR

Omar E. Pol, Dec 02 2007

STATUS

approved

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Last modified April 19 22:22 EDT 2019. Contains 322291 sequences. (Running on oeis4.)