A097286 - OEIS

A097286

Rectangular array T by antidiagonals: T(n,k) = rank of k-th n in A097285.

1, 3, 2, 7, 5, 4, 13, 9, 6, 8, 21, 15, 11, 10, 14, 31, 23, 17, 12, 16, 22, 43, 33, 25, 19, 18, 24, 32, 57, 45, 35, 27, 20, 26, 34, 44, 73, 59, 47, 37, 29, 28, 36, 46, 58, 91, 75, 61, 49, 39, 30, 38, 48, 60, 74, 111, 93, 77, 63, 51, 41, 40, 50, 62, 76, 92, 133, 113, 95, 79, 65

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OFFSET

1,2

COMMENTS

As a sequence, this is a permutation of the natural numbers. Row 1 is essentially A002061.

LINKS

Table of n, a(n) for n=1..71.

EXAMPLE

Northwest corner:

1 3 7 13 21

2 5 9 15 23

4 6 11 17 25