This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
BIN: 110000, 110001, 110010, 110011, 110100, 110101, 110110, 110111, 111000, 111001; OCT: 60, 61, 62, 63, 64, 65, 66, 67, 70, 71; HEX: 30, 31, 32, 33, 34, 35, 36, 37, 38, 39.
def a(n): return 47+n # Martin Gergov, Oct 21 2022
Corresponding hexadecimal values: 81, 82, 83, 84, 85, 86, 87, 88, 89, 91, 92, 93, 94, 95, 96, 97, 98, 99, A2, A3, A4, A5, A6, A7, A8, A9. For example, 'a' is 81, 'b' is 82, ..., 'z' is A9.
With[{r = Range@ 9}, Flatten@ {2^7 + {r, 2^4 + r, 2^5 + Rest[r]}}] (* Michael De Vlieger, Jan 28 2018 *)
Hexadecimal values: C1, C2, C3, C4, C5, C6, C7, C8, C9, D1, D2, D3, D4, D5, D6, D7, D8, D9, E2, E3, E4, E5, E6, E7, E8, E9. For example, 'A' is C1, 'B' is C2, ..., 'Z' is E9.
With[{r = Range@ 9}, Flatten@ {2^7 + 2^6 + {r, 2^4 + r, 2^5 + Rest[r]}}] (* Michael De Vlieger, Jan 28 2018 *)
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