A229621 - OEIS

A229621

Numbers n such that n - (sum of digits of n) is a palindrome.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 420, 421, 422, 423, 424, 425, 426

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..67.

EXAMPLE

185 - (1+8+5) = 171 (a palindrome). Thus, 185 is a member of this sequence.

PROG

(Python)

def ispal(n):

..r = ''

..for i in str(n):

....r = i + r

..return n == int(r)

def DS(n):

..s = 0

..for i in str(n):

....s += int(i)

..return s

{print(n, end=', ') for n in range(10**3) if ispal(n-DS(n))}

## Simplified by Derek Orr, Apr 10 2015

(PARI) ispal(d) = Vecrev(d) == d;

isok(n) = ispal(digits(n-sumdigits(n))); \\ Michel Marcus, Apr 11 2015

CROSSREFS

Cf. A066568.

Sequence in context: A067080 A008554 A055644 * A077342 A242474 A351374

Adjacent sequences: A229618 A229619 A229620 * A229622 A229623 A229624

KEYWORD

nonn,base,easy

AUTHOR

Derek Orr, Sep 26 2013

EXTENSIONS

More terms from Derek Orr, Apr 10 2015

STATUS

approved