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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.

A290281 Numbers k such that (k-1) mod phi(k) = lambda(k), where phi = A000010 and lambda = A002322.

Table of values

n a(n)
1 6601
2 11972017
3 34657141
4 67902031
5 139952671
6 258634741
7 2000436751
8 8801128801
9 9116583841
10 9462932431
11 38069223721
12 326170416001
13 359316634951
14 1860929324101
15 2022188518351
16 2283475947391
17 2648686458601
18 2697891108151
19 4513362899761
20 5020030521001
21 5472940991761
22 6163867710001
23 7507903975951
24 19288340548471

List of values

[6601, 11972017, 34657141, 67902031, 139952671, 258634741, 2000436751, 8801128801, 9116583841, 9462932431, 38069223721, 326170416001, 359316634951, 1860929324101, 2022188518351, 2283475947391, 2648686458601, 2697891108151, 4513362899761, 5020030521001, 5472940991761, 6163867710001, 7507903975951, 19288340548471]

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

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