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 A255437 In positive integers: replace k^2 with the first k odd numbers. 10
 1, 2, 3, 1, 3, 5, 6, 7, 8, 1, 3, 5, 10, 11, 12, 13, 14, 15, 1, 3, 5, 7, 17, 18, 19, 20, 21, 22, 23, 24, 1, 3, 5, 7, 9, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 1, 3, 5, 7, 9, 11, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 1, 3, 5, 7, 9, 11, 13, 50, 51 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(A005448(n)) = 1; conjecture: a(A068722(n)) = (2*n+1)^2, i.e. A068722(n) = gives the position of the first occurrence of n-th odd square; A164514(n) = a(A255527(n)) and a(m) < A164514(n) for m < A255527(n). LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 EXAMPLE .  A000290 | 1,    4,          9,                      16,         . . . .  A000027 | _,2,3,___,5,6,7,8,_____,10,11,12,13,14,15,_______,17,18,... .  A158405 | 1,    1,3,        1,3,5,                  1,3,5,7, .  --------+------------------------------------------------------------- .     a(n) | 1,2,3,1,3,5,6,7,8,1,3,5,10,11,12,13,14,15,1,3,5,7,17,18,19 . PROG a255437 n = a255437_list !! (n-1) a255437_list = f 0 [1..] a158405_tabl where    f k xs (zs:zss) = us ++ zs ++ f (k + 2) vs zss                      where (us, v:vs) = splitAt k xs CROSSREFS Cf. A256188, A000290, A000037, A158405, A016742, A164514, A255527, A005448, A255507 (first differences), A255508 (partial sums). Sequence in context: A127951 A208814 A230449 * A162609 A194752 A194740 Adjacent sequences:  A255434 A255435 A255436 * A255438 A255439 A255440 KEYWORD nonn AUTHOR Reinhard Zumkeller, Mar 23 2015 STATUS approved

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Last modified April 10 16:05 EDT 2021. Contains 342845 sequences. (Running on oeis4.)