The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A329545 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A329545

After a(1) = 1, add the even terms and subtract the odd ones, the result must always be a palindrome. This is the lexicographically earliest sequence of distinct positive integers with this property.
(history; published version)

#31 by N. J. A. Sloane at Wed Dec 11 14:47:43 EST 2019

STATUS

proposed

approved

#30 by Chai Wah Wu at Wed Dec 11 14:43:24 EST 2019

STATUS

editing

proposed

#29 by Chai Wah Wu at Wed Dec 11 14:43:14 EST 2019

COMMENTS

a(63411) = 964. Rémy Sigrist's comment in A329544 shows that terms in A104444 are not in the sequence. Conjecture: Sequence is a permutation of positive integers not in A104444. - Chai Wah Wu, Dec 11 2019

STATUS

approved

editing

#28 by Alois P. Heinz at Wed Dec 11 14:36:29 EST 2019

STATUS

editing

approved

#27 by Alois P. Heinz at Wed Dec 11 14:36:26 EST 2019

COMMENTS

a(63411) = 964. _Rémy Sigrist_'s comment in A329544 shows that terms in A104444 are not in the sequence. - Chai Wah Wu, Dec 11 2019

STATUS

proposed

editing

#26 by Chai Wah Wu at Wed Dec 11 14:21:43 EST 2019

STATUS

editing

proposed

#25 by Chai Wah Wu at Wed Dec 11 14:00:24 EST 2019

COMMENTS

a(63411) = 964. Rémy Sigrist's comment in A329544 shows that terms in A104444 are not in the sequence. - Chai Wah Wu, Dec 11 2019

CROSSREFS

Cf. A104444.

STATUS

approved

editing

#24 by M. F. Hasler at Mon Nov 18 19:59:07 EST 2019

STATUS

editing

approved

#23 by M. F. Hasler at Mon Nov 18 19:58:59 EST 2019

CROSSREFS

Cf. A002113 (palindromes), A086862 (first differences of palindromes).

STATUS

approved

editing

Discussion

Mon Nov 18

19:59

M. F. Hasler: OK

#22 by Alois P. Heinz at Mon Nov 18 16:25:02 EST 2019

STATUS

editing

approved