A062388 Smallest palindrome with digit sum = n.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 55, 191, 66, 292, 77, 393, 88, 494, 99, 595, 686, 696, 787, 797, 888, 898, 989, 999, 5995, 19991, 6996, 29992, 7997, 39993, 8998, 49994, 9999, 59995, 69896, 69996, 79897, 79997, 89898, 89998, 99899, 99999, 599995, 1999991

Offset

0,3

Links

R. J. Mathar, Table of n, a(n) for n = 0..88

Example

191 is the smallest palindrome to have digits sum to 11.
a(28) = 5995 and no palindrome less than 5995 has digit sum 28.

Prog

(PARI) ispal(n) = my(d=digits(n)); Vecrev(d)==d;
a(n) = {k = 0; while ((sumdigits(k) != n) || !ispal(k), k++); k; } \\ Michel Marcus, Aug 20 2015

Crossrefs

Cf. A043269, A051885.

Sequence in context: A122629 A083477 A069510 * A070244 A302500 A334542

Adjacent sequences: A062385 A062386 A062387 * A062389 A062390 A062391

Keyword

nonn,base,easy

Author

Amarnath Murthy, Jun 27 2001

Extensions

More terms from Erich Friedman, Jul 04 2001

More terms from David Wasserman, Jun 27 2002

Status

approved