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 A254108 Inverse permutation to A254107. 3
 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Antti Karttunen, Table of n, a(n) for n = 1..8192 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

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Last modified November 28 20:44 EST 2020. Contains 338755 sequences. (Running on oeis4.)