A374600 If n = i^2 * A005117(j) for some i, j > 0 then a(n) = j^2 * A005117(i).
1, 4, 9, 2, 16, 25, 36, 8, 3, 49, 64, 18, 81, 100, 121, 5, 144, 12, 169, 32, 196, 225, 256, 50, 6, 289, 27, 72, 324, 361, 400, 20, 441, 484, 529, 7, 576, 625, 676, 98, 729, 784, 841, 128, 48, 900, 961, 45, 10, 24, 1024, 162, 1089, 75, 1156, 200, 1225, 1296
Offset: 1
Keywords
Examples
For n = 84: 84 = 2^2 * A005117(14), so a(84) = 14^2 * A005117(2) = 392.
Links
- Rémy Sigrist, Table of n, a(n) for n = 1..10000
- Rémy Sigrist, PARI program
- Index entries for sequences that are permutations of the natural numbers
Programs
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PARI
\\ See Links section.
Comments