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A354455
a(n) is the first composite number in the n-th row of A328739.
0
4, 8, 8, 16, 16, 24, 24, 32, 32, 32, 45, 48, 48, 54, 64, 64, 64, 72, 80, 81, 90, 96, 105, 108, 108, 108, 120, 128, 128, 128, 144, 144, 160, 160, 162, 175, 180, 180, 192, 192, 192, 200, 200, 216, 216, 240, 240, 240, 240, 243, 243, 256, 256, 270, 280, 288, 288, 288, 288
OFFSET
1,1
COMMENTS
In A328739 there are at least n+1 primes at beginning of row n. So numbers in this sequence appear after A328739(n,n+1).
EXAMPLE
The first composite number in the 10th row of A328739 is 32, so a(10) = 32.
CROSSREFS
KEYWORD
nonn
AUTHOR
Ali Sada, May 30 2022
STATUS
approved