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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.

A260700 Number of distinct parabolic double cosets of the symmetric group S_n.

Table of values

n a(n)
1 1
2 3
3 19
4 167
5 1791
6 22715
7 334031
8 5597524
9 105351108
10 2200768698
11 50533675542
12 1265155704413
13 34300156146805
14 1001152439025205
15 31301382564128969
16 1043692244938401836
17 36969440518414369896
18 1386377072447199902576
19 54872494774746771827248
20 2285943548113541477123970

List of values

[1, 3, 19, 167, 1791, 22715, 334031, 5597524, 105351108, 2200768698, 50533675542, 1265155704413, 34300156146805, 1001152439025205, 31301382564128969, 1043692244938401836, 36969440518414369896, 1386377072447199902576, 54872494774746771827248, 2285943548113541477123970]

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

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