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.

A214334 Number of rooted maps with n edges on the non-orientable surface of type 2.

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 488
5 23320
6 696912
7 16662492
8 348539072
9 6664492800
10 119448394500
11 2038649084648
12 33485525450304
13 533300750150792
14 8280704684511728
15 125874875824299840
16 1879220531953481856
17 27623679628336696672
18 400620376541743419888
19 5741857194453928418268
20 81439444090140433607840
21 1144400134614241780601088
22 15947842815693549007349256
23 220579463084992470012209008
24 3030225572264584257706050816
25 41371174793045515157274738000

List of values

[0, 0, 0, 0, 488, 23320, 696912, 16662492, 348539072, 6664492800, 119448394500, 2038649084648, 33485525450304, 533300750150792, 8280704684511728, 125874875824299840, 1879220531953481856, 27623679628336696672, 400620376541743419888, 5741857194453928418268, 81439444090140433607840, 1144400134614241780601088, 15947842815693549007349256, 220579463084992470012209008, 3030225572264584257706050816, 41371174793045515157274738000]

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

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