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 A078290 Least nontrivial multiple of the n-th prime beginning with 6. 8
 6, 6, 60, 63, 66, 65, 68, 608, 69, 609, 62, 629, 615, 602, 611, 636, 649, 610, 603, 639, 657, 632, 664, 623, 679, 606, 618, 642, 654, 678, 635, 655, 685, 695, 6109, 604, 628, 652, 668, 692, 6086, 6154, 6112, 6176, 6107, 6169, 633, 669, 681, 687, 699, 6214 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..52. MATHEMATICA f[n_] := Block[{k = 2, m = n}, While[ IntegerDigits[k*m][[1]] != 6, k++ ]; k*m]; Table[ f[ Prime[n]], {n, 1, 55}] PROG (Python) from sympy import prime def a(n): pn = prime(n) m = 2*pn while str(m)[0] != '6': m += pn return m print([a(n) for n in range(1, 53)]) # Michael S. Branicky, Jun 06 2021 CROSSREFS Cf. A078285, A078286, A078287, A078288, A078289, A078291, A078292, A078293. Sequence in context: A075179 A321971 A074949 * A269888 A269767 A065239 Adjacent sequences: A078287 A078288 A078289 * A078291 A078292 A078293 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy, Nov 26 2002 EXTENSIONS Edited, corrected and extended by Robert G. Wilson v, Nov 29 2002 STATUS approved

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Last modified June 13 17:32 EDT 2024. Contains 373391 sequences. (Running on oeis4.)