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A085446
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Numbers evenly divisible by twice the sum of the products of each of their digits, excluding even multiples of 10.
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1
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162, 324, 392, 512, 648, 1134, 1296, 1944, 2106, 2592, 2704, 3402, 4212, 4536, 5022, 5184, 5632, 5832, 7128, 7514, 7744, 8424, 8748, 9072, 10044, 10206, 10368, 10406, 11016, 11502, 11664, 12032, 12312, 12716, 13122, 13608, 14256, 14504, 14904
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Take a number n, create a table with d columns and rows where d=number of digits of n. Each column corresponds to a digit of n and each row to a digit of n. In each cell, multiply the two digits of n represented by that row and column. Add up the sums of all of the rows and all of the columns to get a new number m which divides evenly into n.
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EXAMPLE
| 512 / 2*((5*5)+(5*1)+(5*2)+(1*5)+(1*1)+(1*2)+(2*5)+(2*1)+(2*2)) = 4
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CROSSREFS
| Cf. A085444.
Sequence in context: A066476 A107120 A045010 * A206210 A044985 A186844
Adjacent sequences: A085443 A085444 A085445 * A085447 A085448 A085449
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KEYWORD
| base,nonn
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AUTHOR
| Chuck Seggelin (barkeep(AT)plastereddragon.com), Jun 30 2003
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