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

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
8 10 12 19 27

Crossrefs

Sequence in context: A087468 A255975 A167267 * A278503 A283940 A163255

Adjacent sequences: A097283 A097284 A097285 * A097287 A097288 A097289

Keyword

nonn,tabl

Author

Clark Kimberling, Aug 05 2004

Status

approved