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Obtained from A114882 by deleting row 1 and dividing by 2.
3

%I #12 Nov 19 2021 15:49:22

%S 1,2,4,3,12,7,5,24,17,10,6,60,38,27,13,8,84,71,45,32,16,9,144,110,93,

%T 59,42,19,11,180,161,123,104,66,47,22,14,264,218,195,149,126,80,57,28

%N Obtained from A114882 by deleting row 1 and dividing by 2.

%C A permutation of the natural numbers. Row 1 consists of those congruent to 1 mod 3. (One can then delete row 1 of A114883, leaving only numbers congruent to 0 or 2 mod 3 and then replace each by its rank, thus obtaining another permutation of the natural numbers.)

%C Also numbers from the array A083140, without the first row, minus 1 divided by 2.

%e Start with the northwest corner of A114881:

%e 1 3 5 7 9

%e 2 8 14 20 26

%e 4 24 34 54 64

%e 6 48 76 90 118

%e Delete row 1, leaving all the even positive integers; divide them by 2:

%e 1 4 7 10 13

%e 2 12 17 27 32

%e 3 24 38 45 59

%Y Cf. A083140, A114881.

%K nonn,tabl

%O 1,2

%A _Clark Kimberling_, Jan 03 2006