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 A333025 Irregular table read by rows: Take an isosceles triangle with its equal length sides divided into n equal parts with all diagonals drawn, as in A332953. Then T(n,k) = number of k-sided polygons in that figure for k>=3. 7
 1, 5, 14, 3, 1, 29, 19, 4, 50, 66, 9, 81, 164, 12, 134, 313, 37, 2, 219, 546, 60, 7, 359, 853, 112, 9, 556, 1294, 160, 16, 1, 779, 1940, 283, 43, 3, 1105, 2780, 360, 53, 6, 1540, 3750, 670, 91, 5, 1, 2087, 5064, 873, 132, 11, 2806, 6625, 1144, 164, 7, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See the links in A332953 for images of the triangles. LINKS Lars Blomberg, Table of n, a(n) for n = 1..613 (the first 70 rows) EXAMPLE Table begins: 1; 5; 14, 3, 1; 29, 19, 4; 50, 66, 9; 81, 164, 12; 134, 313, 37, 2; 219, 546, 60, 7; 359, 853, 112, 9; 556, 1294, 160, 16, 1; 779, 1940, 283, 43, 3; 1105, 2780, 360, 53, 6; 1540, 3750, 670, 91, 5, 1; 2087, 5064, 873, 132, 11; 2806, 6625, 1144, 164, 7, 3; The row sums are A332953. CROSSREFS Cf. A332953 (regions), A333026 (vertices), A333027 (edges), A007678, A092867, A331452, A331911, A332357, A332358. Sequence in context: A049506 A069524 A262612 * A144518 A051542 A083660 Adjacent sequences: A333022 A333023 A333024 * A333026 A333027 A333028 KEYWORD nonn,tabf AUTHOR Scott R. Shannon and N. J. A. Sloane, Mar 05 2020 STATUS approved

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Last modified September 28 05:44 EDT 2023. Contains 365724 sequences. (Running on oeis4.)