

A334001


The number of odd values in the nth column of A279212.


2



2, 2, 4, 4, 6, 8, 8, 10, 10, 12, 16, 12, 16, 14, 18, 12, 22, 24, 20, 16, 22, 22, 24, 26, 22, 26, 28, 16, 30, 30, 36, 24, 34, 36, 32, 30, 30, 44, 42, 44, 38, 44, 50, 34, 44, 46, 54, 36, 50, 60, 56, 30, 50, 56, 56, 46, 54, 56, 68, 36, 68, 54, 56, 46, 44, 66, 54
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OFFSET

1,1


COMMENTS

All of the values in this sequence are even, as shown in Alec Jones's proof that each column of A279212 has a finite number of odd entries.
Conjecture: a(n) <= 2*n.


LINKS



EXAMPLE

For n = 3, the third column of A279212 is 11, 39, 119, 330, 870, 2209, 5454, 13176, 31280, 73200, ... which contains a(3) = 4 odd values.


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



