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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.

A123816 Number of ways to build a contiguous building with n LEGO blocks of size 1 X 8 on top of a fixed block of the same size so that the building is flat, i.e., with all blocks in parallel position.

Table of values

n a(n)
1 15
2 253
3 5055
4 106387
5 2364993
6 53883047
7 1258407303
8 29843705355

List of values

[15, 253, 5055, 106387, 2364993, 53883047, 1258407303, 29843705355]

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

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