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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.

A187869 a(n) is the concatenation of the numbers appearing in row n of the lexicographically earliest prime pyramid (A051237).

Table of values

n a(n)
1 1
2 12
3 123
4 1234
5 14325
6 143256
7 1432567
8 12347658
9 123476589
10 12347658910
11 1234710985611
12 123471098561112
13 12347651211891013
14 1234761310981112514
15 123476131098111251415
16 12347651211815149101316
17 1234765121189101316151417
18 123476589101316151417121118

List of values

[1, 12, 123, 1234, 14325, 143256, 1432567, 12347658, 123476589, 12347658910, 1234710985611, 123471098561112, 12347651211891013, 1234761310981112514, 123476131098111251415, 12347651211815149101316, 1234765121189101316151417, 123476589101316151417121118]

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

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