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A078261
Smallest integer multiple of the decimal number N = 0.246...up to 2n (decimal point followed by concatenation of 2 through 2n of first n even numbers).
1
1, 6, 123, 617, 24681, 6170253, 1234050607, 30851265177, 12340506070809, 123405060708091, 123405060708091011, 1542563258851137639, 1234050607080910111213, 61702530354045505560657, 2468101214161820222426283, 308512651770227527803285379, 123405060708091011121314151617
OFFSET
1,2
PROG
(PARI) a(n) = {my(s = ""); for (k=1, n, s = concat(s, Str(2*k))); numerator(eval(s)/10^(#s)); } \\ Michel Marcus, Jan 15 2019
CROSSREFS
Cf. A078258 (similar, with concatenation of 1 to n), A078260 (denominators).
Sequence in context: A360576 A138572 A356199 * A239752 A193223 A372920
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Nov 24 2002
EXTENSIONS
More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Apr 19 2003
More terms from Michel Marcus, Jan 15 2019
STATUS
approved