A068135 Smallest prime ending in reverse concatenation of first n natural numbers.

11, 421, 1321, 14321, 154321, 16654321, 37654321, 1487654321, 28987654321, 310987654321, 21110987654321, 11121110987654321, 113121110987654321, 11413121110987654321, 10151413121110987654321, 3416151413121110987654321

Offset

1,1

Links

Table of n, a(n) for n=1..16.

Crossrefs

Sequence in context: A351611 A068704 A090558 * A197770 A287065 A337527

Adjacent sequences: A068132 A068133 A068134 * A068136 A068137 A068138

Keyword

base,easy,nonn

Author

Amarnath Murthy, Feb 22 2002

Extensions

More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 01 2003

Status

approved