

A116890


"Printer's errors" of second kind (trivial multiples of 10 omitted).


2



170471, 1740725, 10744475, 52521875, 582100992, 896914944, 906992640, 1010744168, 1334161125, 3368633184, 3673320192, 4251157632, 4437518596
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OFFSET

1,1


COMMENTS

Numbers n=abcde... that can be written as n = a*b^c*d^e..., where the last operation can be either a multiplication or an exponentiation. Cf. with A096298 where the first operation is an exponentiation. The expressions, up to 10^10, are 1*7^04*71, 1*7^4*0725, 1*07^4*4475, 5*25^2*1^8*7^5, 58*2^10*099^2, 89*6^9*1^4944, 90*6^9*9264^0, 101*07^4*4168, 1*33^4*1^6*1125, 3368*63^3*1^8*4, 3*6^7*3^3*2^01*9^2, 4*2^5*1^1*5763^2, 443*7^5*1^8*596.


LINKS

Table of n, a(n) for n=1..13.


EXAMPLE

896914944 = 89*6^9*1^4944.


CROSSREFS

Two other version of the "printer's errors" sequence are A156322 and A096298.
Sequence in context: A233796 A288356 A233791 * A254550 A254557 A254480
Adjacent sequences: A116887 A116888 A116889 * A116891 A116892 A116893


KEYWORD

base,hard,more,nonn


AUTHOR

Giovanni Resta, Feb 27 2006


STATUS

approved



