A294720 Palindromes in tribonacci sequence with initial values 0,1,0 (A001590).

0, 1, 2, 3, 6, 11, 7256527

Offset

1,3

Comments

7256527 is probably the last term.

Links

Table of n, a(n) for n=1..7.

Mathematica

a = c = 0; b = 1; lst = {0}; While[a < 10^7, d = a + b + c; If[ Reverse[idn = IntegerDigits[d]] == idn, AppendTo[lst, d]]; a = b; b = c; c = d]; lst (* Robert G. Wilson v, Nov 09 2017 *)

Crossrefs

Cf. A001590, A045504, A055391, A294688.

Sequence in context: A350911 A144641 A358237 * A082002 A369899 A102779

Adjacent sequences: A294717 A294718 A294719 * A294721 A294722 A294723

Keyword

nonn,base,more,hard

Author

Chai Wah Wu, Nov 07 2017

Status

approved