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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.

A111935 Numerator of n-th term of the harmonic series after removal of all terms 1/m from Sum_{m=1..n} 1/m for which m contains a 9 in its decimal representation.

Table of values

n a(n)
1 1
2 3
3 11
4 25
5 137
6 49
7 363
8 761
9 789
10 8959
11 27647
12 368651
13 377231
14 128413
15 261831
16 4531207
17 41461543
18 8414831
19 8531519
20 8642903
21 201237217
22 203585563
23 5145999379
24 5200191979
25 15757132337
26 15908097437
27 16048998197
28 501745966907

List of values

[1, 3, 11, 25, 137, 49, 363, 761, 789, 8959, 27647, 368651, 377231, 128413, 261831, 4531207, 41461543, 8414831, 8531519, 8642903, 201237217, 203585563, 5145999379, 5200191979, 15757132337, 15908097437, 16048998197, 501745966907]

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

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