User contributions for Gfis

A user with 68 edits. Account created on 20 April 2023.
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14 January 2026

  • 22:1022:10, 14 January 2026 diff hist +717 N Talk:OEIS/Holonomic ProjectCreated page with "Examples for multiple recurrences: * [https://oeis.org/A308726 A308726] mcj * [https://oeis.org/A307572 A307572] FindRE: [[0],[630,-195,15],[-2328,940,-92],[1232,-566,62],[-460,248,-32],[-172,128,-20],[320,-356,84],[-96,214,-70],[-12,-48,24],[6,3,-3]] mcj [[0],[630,-195,15],[-2328,940,-92],[1232,-566,62],[-460,248,-32],[-172,128,-20],[320,-356,84],[-96,214,-70],[-12,-48,24],[6,3,-3]] * [https://oeis.org/A122648 A122648] 1,1,4,10,44,156,752,3256,17040,84496,475712,..." current

30 December 2025

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9 August 2025

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9 March 2025

4 December 2024

  • 10:0010:00, 4 December 2024 diff hist +1,846 N OEIS/SpiralsCreated page with "===Hexagonal grid, counterclockwise=== Cf. [https://oeis.org/A056105 A056105] First spoke of a hexagonal spiral. From Robert G. Wilson v, Jul 05 2014: (Start) Each of the 6 primary spokes or rays has a generating formula as stated here: 1st: 90 degrees A056105 3n^2 - 2n + 1 2nd: 30 degrees A056106 3n^2 - n + 1 3rd: 330 degrees A056107 3n^2 + 1 4th: 270 degrees A056108 3n^2 + n + 1 5th: 210 degrees A056109 3n^2 + 2n + 1 6th: 150 degrees A003215 3n^2 + 3n..." current
  • 09:5109:51, 4 December 2024 diff hist +33 OEIS→‎Small projects: Spirals

17 October 2024

4 October 2024

3 October 2024

1 October 2024

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