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A078286 Least nontrivial multiple of the n-th prime beginning with 2. 8
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
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
Sequence in context: A355312 A212284 A091235 * A004461 A008553 A007930
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Nov 26 2002
EXTENSIONS
Edited and extended by Robert G. Wilson v, Nov 29 2002
STATUS
approved

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Last modified June 16 14:12 EDT 2024. Contains 373430 sequences. (Running on oeis4.)