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 A056962 Base 16 reversal of n (written in base 10). 3
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 17, 33, 49, 65, 81, 97, 113, 129, 145, 161, 177, 193, 209, 225, 241, 2, 18, 34, 50, 66, 82, 98, 114, 130, 146, 162, 178, 194, 210, 226, 242, 3, 19, 35, 51, 67, 83, 99, 115, 131, 147, 163, 179, 195, 211, 227, 243, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS EXAMPLE a(17) = 17 because 17 in hexadecimal is 11, the same as its reverse. a(18) = 33 because 18 in hexadecimal is 12, and hexadecimal 21 is 2 * 16 + 1 = 33. a(19) = 49 because 19 in hexadecimal is 13, and hexadecimal 31 is 3 * 16 + 1 = 49. MATHEMATICA Table[FromDigits[Reverse[IntegerDigits[n, 16]], 16], {n, 0, 127}] (* Alonso del Arte, Sep 30 2018 *) PROG (PARI) a(n) = fromdigits(Vecrev(digits(n, 16)), 16); \\ Michel Marcus, Sep 30 2018 CROSSREFS Cf. A004086, A030101-A030108, A056960-A056963, A029730. Sequence in context: A053836 A025483 A053165 * A043275 A216455 A338782 Adjacent sequences:  A056959 A056960 A056961 * A056963 A056964 A056965 KEYWORD base,nonn,easy AUTHOR Henry Bottomley, Jul 18 2000 STATUS approved

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Last modified January 22 07:47 EST 2021. Contains 340360 sequences. (Running on oeis4.)