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A086970 Fix 1, then pair-reverse the following odd numbers. 0
1, 5, 3, 9, 7, 13, 11, 17, 15, 21, 19, 25, 23, 29, 27, 33, 31, 37, 35, 41, 39, 45, 43, 49, 47, 53, 51, 57, 55, 61, 59, 65, 63, 69, 67, 73, 71, 77, 75, 81, 79, 85, 83, 89, 87, 93, 91, 97, 95, 101, 99, 105, 103, 109, 107, 113, 111, 117, 115, 121, 119 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Partial sums are A086955.

FORMULA

G.f.: (1+4x-3x^2+2x^3)/((1+x)(1-x)^2)

CROSSREFS

Cf. A004442.

Sequence in context: A118273 A073891 A196396 * A201938 A201410 A019955

Adjacent sequences:  A086967 A086968 A086969 * A086971 A086972 A086973

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Jul 26 2003

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Last modified February 15 20:03 EST 2012. Contains 205852 sequences.