A382262 Nonnegative numbers whose factorial base expansion, when read from right to left, corresponds to the ordinal transform of some finite sequence, with offset 0.
0, 1, 3, 5, 9, 11, 15, 23, 33, 35, 39, 47, 57, 59, 63, 83, 87, 119, 153, 155, 159, 167, 177, 179, 183, 203, 207, 239, 273, 275, 279, 287, 297, 323, 327, 395, 399, 417, 419, 423, 527, 563, 567, 719, 873, 875, 879, 887, 897, 899, 903, 923, 927, 959, 993, 995
Offset: 0
Examples
The first terms, in decimal and in factorial base, are: n a(n) fact(a(n)) -- ---- ---------- 0 0 0 1 1 1 2 3 1,1 3 5 2,1 4 9 1,1,1 5 11 1,2,1 6 15 2,1,1 7 23 3,2,1 8 33 1,1,1,1 9 35 1,1,2,1 10 39 1,2,1,1 11 47 1,3,2,1 12 57 2,1,1,1 13 59 2,1,2,1 14 63 2,2,1,1 15 83 3,1,2,1 16 87 3,2,1,1 17 119 4,3,2,1 18 153 1,1,1,1,1
Links
- Rémy Sigrist, Table of n, a(n) for n = 0..13231
- Rémy Sigrist, PARI program
- Index entries for sequences related to factorial base representation
Programs
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PARI
\\ See Links section.
Comments