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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A319842 a(n) = 8 * A104720(n) + ceiling(n/2).

Table of values

n a(n)
0 8
1 89
2 897
3 8978
4 89786
5 897867
6 8978675
7 89786756
8 897867564
9 8978675645
10 89786756453
11 897867564534
12 8978675645342
13 89786756453423
14 897867564534231
15 8978675645342312
16 89786756453423120
17 897867564534231201
18 8978675645342312009
19 89786756453423120090
20 897867564534231200898
21 8978675645342312008979

List of values

[8, 89, 897, 8978, 89786, 897867, 8978675, 89786756, 897867564, 8978675645, 89786756453, 897867564534, 8978675645342, 89786756453423, 897867564534231, 8978675645342312, 89786756453423120, 897867564534231201, 8978675645342312009, 89786756453423120090, 897867564534231200898, 8978675645342312008979]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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