A114011 Least multiple of prime(n) ending in digit 1.

21, 11, 91, 51, 171, 161, 261, 31, 111, 41, 301, 141, 371, 531, 61, 201, 71, 511, 711, 581, 801, 291, 101, 721, 321, 981, 791, 381, 131, 411, 1251, 1341, 151, 471, 1141, 501, 1211, 1611, 181, 191, 1351, 591, 1791, 211, 1561, 681, 2061, 1631, 2151, 241, 251

Offset

4,1

Links

Table of n, a(n) for n=4..54.

Example

a(9) = 161 == 0 (mod prime(9)=23).

Mathematica

f[n_] := Block[{k = 1, p = Prime[n]}, While[Mod[k*p, 10] != 1, k++ ]; k*p]; Table[ f[n], {n, 4, 54}] (* Robert G. Wilson v *)

Crossrefs

Cf. A114012.

Sequence in context: A213217 A300505 A086981 * A300943 A270790 A300887

Adjacent sequences: A114008 A114009 A114010 * A114012 A114013 A114014

Keyword

base,nonn

Author

Amarnath Murthy, Nov 12 2005

Extensions

More terms from Robert G. Wilson v, Nov 17 2005

Status

approved