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A249506 Inverse permutation to A249494 (= permutation of the positive integers such that the parity of the first digit of a(n+1) equals that of a(n)'s last digit). 1
1, 7, 2, 8, 3, 9, 4, 10, 5, 6, 13, 14, 17, 18, 21, 22, 25, 26, 29, 11, 12, 15, 16, 19, 20, 23, 24, 27, 28, 30, 33, 34, 37, 38, 41, 42, 45, 46, 49, 31, 32, 35, 36, 39, 40, 43, 44, 47, 48, 50, 53, 54, 57, 58, 61, 62, 65, 66, 69, 51, 52, 55, 56, 59, 60, 63, 64, 67, 68, 70, 73, 74, 77, 78, 81, 82, 85 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A249278 and A249279 for the variant based on nonnegative integers; A162501 is a variant based not on parity but on equality.

LINKS

Table of n, a(n) for n=1..77.

Index entries for sequences that are permutations of the natural numbers

PROG

(PARI) a=vector(#A249494); for(i=1, #a, A249494[i]<=#a&&a[A249494[i]]=i); a \\ Result only valid up to the first zero.

CROSSREFS

Cf. A000030, A162501.

Sequence in context: A121239 A201322 A093753 * A199046 A198564 A259072

Adjacent sequences:  A249503 A249504 A249505 * A249507 A249508 A249509

KEYWORD

nonn

AUTHOR

M. F. Hasler, Oct 30 2014

STATUS

approved

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Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)