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A078828
Product of all primes contained as binary substrings in binary representation of n.
1
1, 1, 2, 3, 2, 10, 6, 63, 2, 2, 20, 330, 6, 390, 126, 1323, 2, 34, 4, 114, 20, 100, 660, 159390, 6, 6, 780, 12870, 126, 237510, 2646, 861273, 2, 2, 68, 102, 4, 740, 228, 2394, 20, 820, 200, 141900, 660, 42900, 318780, 157317930, 6, 102, 12, 342, 780, 206700
OFFSET
0,3
EXAMPLE
n=7: product of the A078827(7)=3 primes as binary substrings in binary representation of 7 -> '111': a(7) = '11'*'11'*'111' = 3*3*7 = 63.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Dec 08 2002
STATUS
approved