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A061088
a(n) = A053062(n) / n.
1
1, 12, 123, 120304, 102030405, 10203040506, 1020304050607, 102030405060708, 10203040506070809, 10203040506070809010, 10203040506070809010011, 102030405060708009010011012, 1020304050607008009010011012013, 1020304050607008009010011012013014
OFFSET
1,2
LINKS
EXAMPLE
a(5) = 102030405 = 510152025/5, where 510152025 is obtained by concatenating 5,10,15,20 and finally 25 (which is 5^2).
PROG
(PARI) a(n)={fromdigits(concat(vector(n, k, digits(k*n))))/n} \\ Andrew Howroyd, Nov 09 2019
CROSSREFS
Cf. A053062.
Sequence in context: A117640 A074158 A071269 * A176556 A175252 A173578
KEYWORD
nonn,base
AUTHOR
Amarnath Murthy, Apr 19 2001
EXTENSIONS
Offset corrected and terms a(7) and beyond from Andrew Howroyd, Nov 09 2019
STATUS
approved