cp's OEIS Frontend

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.

A172554 Number of 2*n X 18 binary arrays with row sums 9 and column sums n.

Table of values

n a(n)
0 1
1 48620
2 842090474940
3 89365729945562642000
4 21796558191507153941744357500
5 8588121524476528848476120449733261520
6 4623755659802671553551698062433487687144266000
7 3100343219257976442736156588732505699555692275498897600
8 2446263257880905042021634694206746192857701260816933527219717500

List of values

[1, 48620, 842090474940, 89365729945562642000, 21796558191507153941744357500, 8588121524476528848476120449733261520, 4623755659802671553551698062433487687144266000, 3100343219257976442736156588732505699555692275498897600, 2446263257880905042021634694206746192857701260816933527219717500]

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

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