A006029 Numbers k such that the k-th tetrahedral number k*(k+1)*(k+2)/6 is palindromic.

1, 2, 17, 21, 336

Offset: 1

Author

Patrick De Geest

Keywords

• nonn
• base
• more

Comments

No more terms to 10^10. - Charles R Greathouse IV, Mar 23 2011

Links

• Patrick De Geest, Palindromic Tetrahedrals

Crossrefs

Cf. A006030.

Programs

Mathematica

Select[Range[350],PalindromeQ[(#(#+1)(#+2))/6]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 02 2018 *)