

A065583


Sum of numbers which in base n have (n1) distinct nonzero digits.


0



0, 1, 12, 252, 9360, 559800, 49412160, 6039794880, 976299609600, 201599999798400, 51766949513664000, 16177372653293913600, 6044902527410562816000, 2661334524326601925401600
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OFFSET

1,3


LINKS

Table of n, a(n) for n=1..14.


FORMULA

a(n) = n!*(n^(n1)1)/(2(n1)) = A001710(n)*A060072(n)


EXAMPLE

a(4) = 252 since we need to sum the base 4 numbers 123, 132, 213, 231, 312 and 321, i.e. the decimal sum 27+30+39+45+54+57 = 252.


CROSSREFS

Sequence in context: A289565 A198475 A035013 * A129585 A034672 A133285
Adjacent sequences: A065580 A065581 A065582 * A065584 A065585 A065586


KEYWORD

base,nonn


AUTHOR

Henry Bottomley, Nov 28 2001


EXTENSIONS

More terms from Benoit Cloitre, Jan 31 2002


STATUS

approved



