A215940: Difference between the n-th and the first (identity) permutation of (0,...,m-1), interpreted as a decimal number, divided by 9 (for any m for which 10! >= m! >= n)
A215940 ➡️ https://oeis.org/A215940

3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/A215940.html
3D graph Gen, threejs animation ➡️ https://decompwlj.com/3DgraphGen/A215940.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/A215940.html

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