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A110338 2n odd numbers followed by 2n-1 even numbers. 0
1, 3, 2, 5, 7, 9, 11, 4, 6, 8, 13, 15, 17, 19, 21, 23, 10, 12, 14, 16, 18, 25, 27, 29, 31, 33, 35, 37, 39, 20, 22, 24, 26, 28, 30, 32, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 34, 36, 38, 40, 42, 44, 46, 48, 50 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..55.

MATHEMATICA

Riffle[TakeList[2*Range[100]-1, 2*Range[9]], TakeList[ 2*Range[100], 2*Range[ 0, 9]+1]] // Flatten (* Harvey P. Dale, Mar 01 2018 *)

PROG

(PARI) lista(nn) = {curo = 1; cure = 2; for (n = 1, nn, for (i = 1, 2*n, print1(curo, ", "); curo += 2; ); for (i = 1, 2*n - 1, print1(cure, ", "); cure += 2; ); ); } \\ Michel Marcus, Sep 16 2013

CROSSREFS

Sequence in context: A175911 A304881 A266635 * A171018 A239260 A013655

Adjacent sequences:  A110335 A110336 A110337 * A110339 A110340 A110341

KEYWORD

easy,nonn

AUTHOR

Amarnath Murthy, Jul 20 2005

STATUS

approved

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Last modified June 3 05:29 EDT 2020. Contains 334798 sequences. (Running on oeis4.)