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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.

A090769 a(n) = 7^(n^2+2n+1)*Product_{j=1..n} (49^j-1).

Table of values

n a(n)
0 7
1 115248
2 4648735526400
3 450407556363158605209600
4 104778523164913973815626804401602560000
5 58523610551335889301209607995669952696063684472995840000
6 78484177614161178233131678359243733693084949841898468389173730723495936000000
7 252711655239728880943018718373465881336679551349902568778399448766444479481704737212965012373504000000

List of values

[7, 115248, 4648735526400, 450407556363158605209600, 104778523164913973815626804401602560000, 58523610551335889301209607995669952696063684472995840000, 78484177614161178233131678359243733693084949841898468389173730723495936000000, 252711655239728880943018718373465881336679551349902568778399448766444479481704737212965012373504000000]

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

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