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A026247 a(n) = (1/2)*s(n), where s(n) is n-th even number in A002251. 1
1, 5, 2, 3, 9, 10, 4, 13, 14, 6, 17, 18, 7, 8, 22, 26, 27, 11, 30, 31, 12, 34, 35, 39, 15, 16, 43, 47, 48, 19, 51, 52, 20, 21, 56, 60, 23, 24, 64, 65, 25, 68, 69, 73, 28, 29, 77, 81, 82, 32, 85, 86, 33, 89, 90, 94, 36, 37, 98, 99, 38, 102, 103 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..63.

CROSSREFS

Sequence in context: A176319 A261026 A160080 * A226693 A306300 A105269

Adjacent sequences:  A026244 A026245 A026246 * A026248 A026249 A026250

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 23 18:45 EDT 2021. Contains 345402 sequences. (Running on oeis4.)