The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A359862 Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from a 2 x n square grid of points using only a compass. 6
 3, 0, 16, 29, 0, 102, 117, 10, 2, 4, 368, 402, 64, 26, 1, 12, 860, 903, 252, 52, 0, 2, 12, 1812, 2028, 520, 110, 4, 3, 24, 3168, 3841, 960, 204, 8, 6, 32, 5420, 6804, 1748, 362, 24, 11, 44, 8388, 10987, 2826, 552, 46, 14, 56, 12808, 17122, 4448, 922, 72, 17, 64, 18348, 25257, 6594, 1370, 82, 26 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS See A359859 and A359860 for further details and images of the circles. LINKS Table of n, a(n) for n=1..64. Scott R. Shannon, Image for n = 7. FORMULA Sum of row n = A359860(n). EXAMPLE The table begins: 3; 0, 16, 29; 0, 102, 117, 10, 2; 4, 368, 402, 64, 26, 1; 12, 860, 903, 252, 52, 0, 2; 12, 1812, 2028, 520, 110, 4, 3; 24, 3168, 3841, 960, 204, 8, 6; 32, 5420, 6804, 1748, 362, 24, 11; 44, 8388, 10987, 2826, 552, 46, 14; 56, 12808, 17122, 4448, 922, 72, 17; 64, 18348, 25257, 6594, 1370, 82, 26; ... CROSSREFS Cf. A359859 (vertices), A359860 (regions), A359861 (edges), A001859, A359258. Sequence in context: A365972 A290580 A038122 * A143779 A240244 A036968 Adjacent sequences: A359859 A359860 A359861 * A359863 A359864 A359865 KEYWORD nonn,tabf AUTHOR Scott R. Shannon, Jan 16 2023 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 20 15:33 EDT 2024. Contains 374459 sequences. (Running on oeis4.)