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A214816 Number of unsensed maps with n edges on a surface of genus g, summed on g = 0 through [n/2].. 7
1, 2, 5, 20, 96, 644, 5839, 67834, 970568, 16256556, 308620966, 6506035400 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

Timothy R. Walsh, Space-efficient generation of nonisomorphic maps and hypermaps

T. R. Walsh, Space-Efficient Generation of Nonisomorphic Maps and Hypermaps, J. Int. Seq. 18 (2015) # 15.4.3

CROSSREFS

Cf. A006385, A006387, A214814, A214815, A214816.

Sequence in context: A115082 A020105 A347071 * A020005 A259834 A074415

Adjacent sequences:  A214813 A214814 A214815 * A214817 A214818 A214819

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 31 2012

STATUS

approved

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Last modified September 17 18:29 EDT 2021. Contains 347489 sequences. (Running on oeis4.)