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 A068909 Number of partitions of n modulo 7. 3
 1, 1, 2, 3, 5, 0, 4, 1, 1, 2, 0, 0, 0, 3, 2, 1, 0, 3, 0, 0, 4, 1, 1, 2, 0, 5, 0, 0, 1, 1, 4, 3, 5, 0, 4, 1, 1, 0, 3, 0, 0, 0, 2, 2, 2, 3, 5, 0, 0, 2, 1, 4, 0, 0, 0, 0, 3, 2, 2, 3, 5, 0, 4, 2, 2, 2, 3, 5, 0, 4, 3, 2, 4, 6, 5, 0, 0, 2, 2, 4, 3, 5, 0, 0, 3, 3, 6, 6, 3, 0, 1, 3, 3, 4, 3, 5, 0, 0, 4, 3, 4, 6, 5, 0, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Of the partitions of numbers from 1 to 100000: 27193 are 0, 12078 are 1, 12203 are 2, 12260 are 3, 12231 are 4, 12003 are 5 and 12032 are 6 modulo 7, largely because the number of partitions of 7m+5 is always a multiple of 7. LINKS Henry Bottomley, Partition calculators using java applets FORMULA a(n) =A010876(A000041(n)) =A068906(7, n) a(n) = Pm(n,1) with Pm(n,k) = if k

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Last modified January 23 16:36 EST 2020. Contains 331172 sequences. (Running on oeis4.)