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A156223 Numbers that are products of distinct terms in A000312. 3
1, 4, 27, 108, 256, 1024, 3125, 6912, 12500, 27648, 46656, 84375, 186624, 337500, 800000, 823543, 1259712, 3200000, 3294172, 5038848, 11943936, 16777216, 21600000, 22235661, 47775744, 67108864 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..26.

EXAMPLE

a(1) = 1 = 1^1

a(2) = 4 = 2^2

a(3) = 108 = 2^2 * 3^3

...

a(20) = 5038848 = 2^2 * 3^3 * 6^6

MATHEMATICA

Generating recursion (in Mathematica): p = {1};

For[x = 2, x <= 13, x++, {

p = Flatten@Append[p, p*x^x];

}];

CROSSREFS

Sequence in context: A296316 A071175 A063262 * A048102 A171469 A267685

Adjacent sequences:  A156220 A156221 A156222 * A156224 A156225 A156226

KEYWORD

nonn

AUTHOR

Gabriel C. Benamy, Feb 06 2009

STATUS

approved

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Last modified January 23 02:34 EST 2019. Contains 319365 sequences. (Running on oeis4.)