Created
April 25, 2021 04:32
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| NB. http://oeis.org/A342260 | |
| a =: verb : '0 } I. y = +/"1 (y-1) = y #.inv ^&2 (i.y^(y+1))' "0 | |
| a 2 | |
| 3 | |
| a 3 | |
| 31 | |
| a 4 | |
| 217 | |
| a 5 | |
| 268 | |
| a 6 | |
| 8399 | |
| a 7 | |
| 29110 | |
| timespacex 'a 7' | |
| 7.456 1.20796e9 | |
| NB. (a 7) in 7.456 seconds using 1.20796e9 bytes ram (on system76 lemur pro i7-1165G7 @ 2.80GHz on battery) |
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The above is j code: https://www.jsoftware.com/