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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.

A051955 a(n) = smallest palindrome > a(n-1) such that a(1)*a(2)*...*a(n) + 1 and a(1)*a(2)*...*a(n) - 1 are primes.

Table of values

n a(n)
1 4
2 363
3 434
4 484
5 494
6 636
7 4004
8 46864
9 47474
10 135531
11 695596
12 1793971
13 1826281
14 1933391
15 4700074
16 4785874
17 4806084
18 6462646
19 6574756
20 9558559
21 15399351
22 46288264
23 53500535
24 57499475
25 150787051
26 185808581
27 197636791
28 226686622

List of values

[4, 363, 434, 484, 494, 636, 4004, 46864, 47474, 135531, 695596, 1793971, 1826281, 1933391, 4700074, 4785874, 4806084, 6462646, 6574756, 9558559, 15399351, 46288264, 53500535, 57499475, 150787051, 185808581, 197636791, 226686622]

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

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