A055948 n + reversal of base 4 digits of n (written in base 10).

0, 2, 4, 6, 5, 10, 15, 20, 10, 15, 20, 25, 15, 20, 25, 30, 17, 34, 51, 68, 25, 42, 59, 76, 33, 50, 67, 84, 41, 58, 75, 92, 34, 51, 68, 85, 42, 59, 76, 93, 50, 67, 84, 101, 58, 75, 92, 109, 51, 68, 85, 102, 59, 76, 93, 110, 67, 84, 101, 118, 75, 92, 109, 126, 65, 130, 195

Offset

0,2

Comments

If n has an even number of digits in base 4 then a(n) is a multiple of 5.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

Index entries for sequences related to Reverse and Add!

Formula

a(n) = n + A030103(n).

Mathematica

Table[n+FromDigits[Reverse[IntegerDigits[n, 4]], 4], {n, 0, 70}] (* Harvey P. Dale, Nov 24 2021 *)

Prog

(Haskell)
a055948 n = n + a030103 n
-- Reinhard Zumkeller, Oct 10 2011

Crossrefs

Cf. A030103, A056964.

Cf. A035524 (iterated).

Sequence in context: A365059 A083718 A319804 * A071083 A141765 A234574

Adjacent sequences: A055945 A055946 A055947 * A055949 A055950 A055951

Keyword

base,nonn,look

Author

Henry Bottomley, Jul 18 2000

Status

approved