A281349 Row sums of A281350.

1, 3, 14, 61, 252, 1019, 4127, 17242, 74007, 325615, 1458604

Offset

1,2

Links

Table of n, a(n) for n=1..11.

R. J. Mathar, Topologically Distinct Sets of Non-intersecting Circles in the Plane, arXiv:1603.00077 [math.CO], 2016.

Crossrefs

Cf. A281350.

Sequence in context: A171499 A006502 A024037 * A307268 A237608 A100295

Adjacent sequences: A281346 A281347 A281348 * A281350 A281351 A281352

Keyword

nonn,more

Author

N. J. A. Sloane, Jan 20 2017

Status

approved