A078286 - OEIS

A078286

Least nontrivial multiple of the n-th prime beginning with 2.

20, 21, 20, 21, 22, 26, 204, 209, 207, 203, 217, 222, 205, 215, 235, 212, 236, 244, 201, 213, 219, 237, 249, 267, 291, 202, 206, 214, 218, 226, 254, 262, 274, 278, 298, 2114, 2041, 2119, 2004, 2076, 2148, 2172, 2101, 2123, 2167, 2189, 2110, 2007, 2043, 2061

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

MATHEMATICA

f[n_] := Block[{k = 2, m = n}, While[ IntegerDigits[k*m][[1]] != 2, k++ ]; k*m]; Table[ f[ Prime[n]], {n, 1, 55}]

CROSSREFS

Cf. A078285, A078287, A078288, A078289, A078290, A078291, A078292, A078293.

Sequence in context: A355312 A212284 A091235 * A004461 A008553 A007930

Adjacent sequences: A078283 A078284 A078285 * A078287 A078288 A078289

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy, Nov 26 2002

EXTENSIONS

Edited and extended by Robert G. Wilson v, Nov 29 2002

STATUS

approved