A083125 a(1) = 1, then the smallest number not occurring earlier such that the product of a pair of successive terms is a palindrome.

1, 2, 3, 11, 4, 22, 28, 9, 19, 17, 16, 29, 8, 34, 88, 7, 23, 18, 14, 31, 154, 13, 38, 231, 12, 21, 25, 209, 42, 6, 37, 15, 35, 143, 49, 77, 26, 33, 47, 303, 57, 333, 64, 66, 32, 132, 48, 44, 53, 404, 58, 364, 111, 5, 101, 55, 91, 99, 46, 437, 92, 236, 107, 422, 56, 121, 45

Offset

1,2

Comments

Conjecture: except for multiples of 10, all natural numbers belong to this sequence. - Reinhard Zumkeller, May 02 2003

Links

Jean-Marc Falcoz, Table of n, a(n) for n = 1..2000

Crossrefs

Cf. A083126, A083664.

Sequence in context: A046641 A336876 A083664 * A332661 A031335 A084743

Adjacent sequences: A083122 A083123 A083124 * A083126 A083127 A083128

Keyword

base,nonn

Author

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 23 2003

Extensions

More terms from Reinhard Zumkeller, May 02 2003

Status

approved