A254108 Inverse permutation to A254107.

1, 3, 2, 4, 6, 5, 7, 11, 8, 16, 22, 10, 9, 12, 29, 37, 17, 46, 56, 13, 23, 67, 79, 30, 92, 106, 15, 14, 18, 38, 121, 137, 47, 154, 172, 24, 57, 191, 211, 68, 232, 254, 19, 31, 80, 277, 301, 93, 326, 352, 39, 107, 379, 407, 122, 436, 466, 21, 20, 25, 48, 138, 497, 529, 155, 562, 596, 58, 173, 631, 667, 192, 704, 742, 32, 69, 212

Offset

1,2

Links

Antti Karttunen, Table of n, a(n) for n = 1..8192

Index entries for sequences that are permutations of the natural numbers

Prog

(Scheme) (define (A254108 n) (let ((col (A254111 n)) (row (A254112 n))) (* (/ 1 2) (- (expt (+ col row) 2) col row row row -2))))

Crossrefs

Inverse: A254107.

Cf. A254106, A254111, A254112.

Sequence in context: A166695 A254107 A116942 * A093573 A126290 A277377

Adjacent sequences: A254105 A254106 A254107 * A254109 A254110 A254111

Keyword

nonn

Author

Antti Karttunen, Jan 27 2015

Status

approved