A007155 (2^(2^n))*(3^(3^n - 2^n)). (Formerly M2055)

2, 12, 3888, 297538935552, 675089708540070294583610393745358848, 202089899117162771494026986677587201812698520846319037282893739002965043835199487594696085800714664172178112512

Offset

0,1

References

J. Berman, ``Free spectra of 3-element algebras,'' in R. S. Freese and O. C. Garcia, editors, Universal Algebra and Lattice Theory (Puebla, 1982), Lect. Notes Math. Vol. 1004, 1983.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

Table of n, a(n) for n=0..5.

J. Berman, Free spectra of 3-element algebras, R. S. Freese and O. C. Garcia, editors, Universal Algebra and Lattice Theory (Puebla, 1982), Lect. Notes Math. Vol. 1004, 1983. (Annotated scanned copy)

Maple

[seq((2^(2^n))*(3^(3^n - 2^n)), n=0..5)];

Crossrefs

Sequence in context: A003042 A000887 A118542 * A265092 A262032 A074200

Adjacent sequences: A007152 A007153 A007154 * A007156 A007157 A007158

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved