A203925 -id:A203925 - cp's OEIS frontend

1, 1, 7, 3367, 281192547174175, 1766847064778382532572997586311708102647654387270579226645978663441513375

Offset: 0

Assoul Abdelkarim, Jan 23 2014

a(6) has 434 digits.

			a(3) = 4^(3!) - 3^(3!) = 4^6 - 3^6 = 3367.

4^#-3^#&/@(Range[0,5]!) (* Harvey P. Dale, Nov 26 2016 *)

a(n) = 4^(n!) - 3^(n!); \\ Michel Marcus, Jan 23 2014

a(n) = 4^(n!) - 3^(n!) = A101407(n) - A100731(n).

2, 2, 10, 3430, 281192563951390, 1766847064778382532572997586311708103976882383055495099549785723721857950

Offset: 0

Assoul Abdelkarim, Jan 23 2014

The next term has 434 digits. - Harvey P. Dale, Nov 04 2017

			For n=2, a(2)=4^2!-3^2!+2^2!-1=16-9+4-1=10.

4^#-3^#+2^#-1&/@(Range[0,5]!) (* Harvey P. Dale, Nov 04 2017 *)

a(n)=(k->4^k-3^k+2^k-1)(n!) \\ Charles R Greathouse IV, Jan 23 2014

a(n)=4^n!-3^n!+2^n!-1.

a(4)-a(5) from Charles R Greathouse IV, Jan 23 2014

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