A173260 -id:A173260 - cp's OEIS frontend

A167182 a(0)=1, a(1)=2; for n>=2, a(n) = 2^A042950(n-2).

1, 2, 4, 8, 64, 4096, 16777216, 281474976710656, 79228162514264337593543950336, 6277101735386680763835789423207666416102355444464034512896

Offset: 0

Giovanni Teofilatto, Oct 29 2009

nonn

Term a(13) has 925 decimal digits; a(14) has 1850 decimal digits. - Michael De Vlieger, Jan 07 2015

Michael De Vlieger, Table of n, a(n) for n = 0..13 [a(0)=1 from _Georg Fischer_, Jun 25 2021]

Cf. A042950, A098011, A165426, A172489, A173260, A175129.

Join[{2,4},NestList[#^2&,8,10]] (* Harvey P. Dale, Nov 30 2019 *)
Table[2^Ceiling[3 2^(i - 3)], {i, 8}] (* Trevor Cappallo, Apr 21 2021 *)

a(n) = (a(n-1))^2 for n > 3.

a(n) = 2^A098011(n+1). - R. J. Mathar, Apr 22 2010

Definition corrected by R. J. Mathar, Apr 22 2010
More terms from Vincenzo Librandi, Apr 25 2010
Entry revised by N. J. A. Sloane, Jun 20 2021

A172489 a(0)=1, a(1)=6; for n>=2, a(n) = 6^A042950(n-2).

Original entry on oeis.org

1, 6, 36, 216, 46656, 2176782336, 4738381338321616896, 22452257707354557240087211123792674816, 504103876157462118901767181449118688686067677834070116931382690099920633856

Offset: 0

Giovanni Teofilatto, Feb 05 2010

nonn

Cf. A042950, A167182, A173260, A175129.

Revised by N. J. A. Sloane, Jun 20 2021

A175129 a(0)=1, a(1)=3; for n>=2, a(n) = 3^A042950(n-2).

Original entry on oeis.org

1, 3, 9, 27, 729, 531441, 282429536481, 79766443076872509863361, 6362685441135942358474828762538534230890216321

Offset: 0

Giovanni Teofilatto, Feb 17 2010

nonn

Cf. A042950, A167182, A172489, A173260.

Revised by N. J. A. Sloane, Jun 20 2021

cp's OEIS Frontend

A167182 a(0)=1, a(1)=2; for n>=2, a(n) = 2^A042950(n-2).

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A172489 a(0)=1, a(1)=6; for n>=2, a(n) = 6^A042950(n-2).

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A175129 a(0)=1, a(1)=3; for n>=2, a(n) = 3^A042950(n-2).

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