A244558 Numbers obtained by concatenating the squares of the digits of Fibonacci(n).

1, 1, 4, 9, 25, 64, 19, 41, 916, 2525, 6481, 11616, 499, 94949, 3610, 816449, 1258149, 4256416, 161641, 36493625, 10811636, 1494911, 464362549, 163693664, 49250425, 1419819, 1813616164, 91496411, 251164481, 64940160, 19163643681, 4149649081, 925416254964

Offset: 1

Author

Vincenzo Librandi, Jul 03 2014

Keywords

• nonn
• base

Examples

			For n = 7, Fibonacci(7) = 13 and a(7) = 19, which is the concatenation of the squares of the digits of 13. For n = 14, Fibonacci(14) = 377 and a(14) = 94949.
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A000045, A048385.

Programs

Magma

[StringToInteger(&cat[IntegerToString(h): h in Reverse([i^2: i in Intseq(Fibonacci(n))])]): n in [1..50]];

Mathematica

Table[FromDigits[Flatten[IntegerDigits/@(IntegerDigits[Fibonacci[n]]^2)]],{n,40}] (* Harvey P. Dale, Jul 31 2018 *)

Formula

a(n) = A048385(A000045(n)).