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 A135601 Acute-angled numbers with an internal digit as the vertex. 9
 102, 103, 104, 105, 106, 107, 108, 109, 120, 130, 131, 132, 140, 141, 142, 143, 150, 151, 152, 153, 154, 160, 161, 162, 163, 164, 165, 170, 171, 172, 173, 174, 175, 176, 180, 181, 182, 183, 184, 185, 186, 187, 190, 191, 192, 193, 194, 195 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The structure of digits represent an acute 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 14 digits: 98765432102468. LINKS EXAMPLE Illustration using the last member of this sequence: 9 . . . . . . . . . . . . . . 8 . . . . . . . . . . . 8 . . 7 . . . . . . . . . . . . . . 6 . . . . . . . . 6 . . . . . 5 . . . . . . . . . . . . . . 4 . . . . . 4 . . . . . . . . 3 . . . . . . . . . . . . . . 2 . . 2 . . . . . . . . . . . 1 . . . . . . . . . . . . . . 0 . . . . CROSSREFS Cf. A134810, A134853, A134941, A134970, A135641, A135642, A135643, A135600, A135602, A135603. Sequence in context: A009101 A031962 A303504 * A296514 A164856 A160712 Adjacent sequences:  A135598 A135599 A135600 * A135602 A135603 A135604 KEYWORD base,fini,nonn AUTHOR Omar E. Pol, Dec 02 2007 STATUS approved

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Last modified July 30 16:31 EDT 2021. Contains 346359 sequences. (Running on oeis4.)