A074159 Smallest multiple of n which begins with the reverse concatenation of first n natural numbers.

1, 210, 321, 43212, 543210, 6543210, 76543215, 876543216, 987654321, 109876543210, 11109876543216, 1211109876543216, 131211109876543216, 14131211109876543214, 1514131211109876543210, 161514131211109876543216

Offset

1,2

Links

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

Example

a(7) = 12345676 = 1763668*7 which starts with 1234567.

Crossrefs

Cf. A074158.

Sequence in context: A125011 A119427 A127424 * A033993 A350373 A046386

Adjacent sequences: A074156 A074157 A074158 * A074160 A074161 A074162

Keyword

base,nonn

Author

Amarnath Murthy, Aug 29 2002

Extensions

Corrected and extended by Sascha Kurz, Jan 15 2003

Status

approved