A260285 - cp's OEIS frontend

A260285 Triangle read by rows: T(n,g) = number of general immersions of a circle with n crossings in a surface of arbitrary genus g, in the case that the circle is oriented and the surface is oriented.

n	a(n)
1	1
2	3
3	1
4	9
5	11
6	2
7	37
8	113
9	68
10	0
11	182
12	1102
13	1528
14	216
15	0
16	1143
17	11114
18	28947
19	14336
20	0
21	0
22	7553
23	112846
24	491767
25	554096
26	69264
27	0
28	0
29	54559
30	1160532
31	7798139
32	16354210
33	7066668
34	0
35	0
36	0
37	412306
38	12038974
39	117668914
40	407921820
41	397094352
42	45043200
43	0
44	0
45	0

[1, 3, 1, 9, 11, 2, 37, 113, 68, 0, 182, 1102, 1528, 216, 0, 1143, 11114, 28947, 14336, 0, 0, 7553, 112846, 491767, 554096, 69264, 0, 0, 54559, 1160532, 7798139, 16354210, 7066668, 0, 0, 0, 412306, 12038974, 117668914, 407921820, 397094352, 45043200, 0, 0, 0]

cp's OEIS Frontend

A260285 Triangle read by rows: T(n,g) = number of general immersions of a circle with n crossings in a surface of arbitrary genus g, in the case that the circle is oriented and the surface is oriented.

Table of values

List of values