A033621 n-1 is a palindrome in base 10, n+1 is a palindrome in base 17.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 89, 233, 374, 425, 596, 647, 869, 920, 3444, 4775, 23633, 45755, 62027, 180082, 231133, 310014, 487785, 566666, 645547, 724428, 803309, 1027202, 1064602, 1215122, 1252522, 1403042, 80399309, 111222112, 112060212, 146979642

Offset

1,2

Links

Table of n, a(n) for n=1..41.

Prog

(PARI) isok(m) = my(da=digits(m-1, 10), db=digits(m+1, 17)); da==Vecrev(da) && db==Vecrev(db); \\ Michel Marcus, Jul 09 2020

Crossrefs

Sequence in context: A061729 A286126 A249157 * A332808 A108548 A333692

Adjacent sequences: A033618 A033619 A033620 * A033622 A033623 A033624

Keyword

nonn,base

Author

Olivier Gérard

Extensions

More terms from Michel ten Voorde

Corrected and extended by Sean A. Irvine, Jul 08 2020

Status

approved