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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.

A269127 Number of sequences with n copies each of 1,2,...,9 avoiding the pattern 12...9.

Table of values

n a(n)
0 1
1 362879
2 12498099730471
3 1072323973643442736211
4 135383475007869462606521105767
5 20584293980310480336378076914369061769
6 3413618982844502796240740610191874586048936771
7 586566986371155102435901052470650279895779757665905993

List of values

[1, 362879, 12498099730471, 1072323973643442736211, 135383475007869462606521105767, 20584293980310480336378076914369061769, 3413618982844502796240740610191874586048936771, 586566986371155102435901052470650279895779757665905993]

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

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