A143708 (1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3, 13, 2*7, 3*5,..) becomes (1^(2+3), 2^(2+5), 2^(3+7), 2^(3+3), 2^(2+5), 11^(2+2), 3^(13+2), 7^(3+5),..).

1, 128, 1024, 64, 128, 14641, 14348907, 5764801, 2097152, 32, 130321, 9765625, 17179869184, 64, 625, 4826809, 512, 20511149, 116415321826934814453125, 6103515625, 4194304, 2401, 4052555153018976267, 4194304, 371293

Offset

1,2

Links

Table of n, a(n) for n=1..25.

Example

a(8)=7^(3+5)=7^8=5764801.
a(9)=2^(4+17)=2^21=2097152.
a(10)=2^(3+2)=2^5=32.
a(11)=19^(2+2)=19^4=130321.
a(12)=5^(3+7)=5^10=9765625.
a(13)=2^(11+23)=2^34=17179869184,
etc.

Crossrefs

Cf. A141287, A141261, A136735.

Sequence in context: A297344 A183976 A183972 * A130813 A206278 A100628

Adjacent sequences: A143705 A143706 A143707 * A143709 A143710 A143711

Keyword

nonn

Author

Juri-Stepan Gerasimov, Nov 13 2008

Extensions

More terms from R. J. Mathar, Apr 18 2010

Status

approved