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A111704 a(n) = concatenation of (n times each digit of n). 2
1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 1111, 1224, 1339, 1456, 1575, 1696, 17119, 18144, 19171, 400, 4221, 4444, 4669, 4896, 50125, 52156, 54189, 56224, 58261, 900, 9331, 9664, 9999, 102136, 105175, 108216, 111259, 114304, 117351, 1600, 16441, 16884 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Maxim Skorohodov, Table of n, a(n) for n = 1..10000

EXAMPLE

a(12) = concatenation 12*1, 12*2 = 1224.

a(123) = 123246369.

MATHEMATICA

Table[FromDigits@ Flatten@ Map[IntegerDigits, Map[n # &, IntegerDigits[n]]], {n, 42}] (* Michael De Vlieger, Nov 05 2020 *)

PROG

(PARI) a(n) = my(d=digits(n), s=""); for (i=1, #d, s = concat(s, n*d[i])); eval(s); \\ Michel Marcus, Nov 05 2020

CROSSREFS

Cf. A111705.

Sequence in context: A068864 A068854 A068867 * A052041 A018884 A050749

Adjacent sequences:  A111701 A111702 A111703 * A111705 A111706 A111707

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy, Aug 22 2005

EXTENSIONS

More terms from Joshua Zucker, May 08 2006

STATUS

approved

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Last modified March 3 04:26 EST 2021. Contains 341756 sequences. (Running on oeis4.)