A348810
a(n) = number of non-orientable genus 9 maps with n edges.
Original entry on oeis.org
0, 0, 0, 0, 0, 0, 0, 0, 0, 100895667, 11802591792, 761046274191, 35728218734494, 1363656535674147, 44859920849412082
Offset: 0
A348811
a(n) = number of non-orientable genus 10 maps with n edges.
Original entry on oeis.org
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3276228298, 441064161280, 32289907002323, 1702134963077638, 72275063245968670
Offset: 0
A267180
Triangle read by rows: T(n,k) = number of rooted maps with n edges on a nonorientable surface of genus k (1 <= k <= n).
Original entry on oeis.org
1, 10, 4, 98, 84, 41, 982, 1340, 1380, 488, 10062, 19280, 31225, 23320, 8229, 105024, 263284, 592824, 696912, 516958, 164892, 1112757, 3486224, 10185056, 16662492, 19381145, 12980716, 4016613, 11934910, 45247084, 164037704, 348539072, 562395292, 590136856, 382630152, 112818960
Offset: 1
Triangle begins:
1,
10,4,
98,84,41,
982,1340,1380,488,
10062,19280,31225,23320,8229,
105024,263284,592824,696912,516958,164892,
1112757,3486224,10185056,16662492,19381145,12980716,4016613,
11934910,45247084,164037704,348539072,562395292,590136856,382630152,112818960
...
- David M. Jackson and Terry I. Visentin, An Atlas of the Smaller Maps in Orientable and Nonorientable Surfaces, Chapman & Hall/CRC, circa 2000. See page 227.
See
A238396 for analog for orientable surfaces.
A380236
Number of non-orientable genus n maps with n edges.
Original entry on oeis.org
1, 2, 8, 47, 473, 7190, 144904, 3534490, 100895667, 3276228298, 119465644032, 4827606232542, 214282994249825, 10361526316840074
Offset: 1