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A087158 Satisfies a(n+2)=a(n+1)+A087157(n)+1. 1
1, 2, 4, 7, 9, 13, 15, 17, 20, 22, 27, 29, 31, 33, 36, 38, 41, 43, 47, 49, 51, 54, 56, 62, 64, 66, 68, 70, 73, 75, 78, 80, 83, 85, 89, 91, 93, 96, 98, 102, 104, 106, 109, 111, 116, 118, 120, 122, 125, 127, 130, 132, 136, 138, 140, 143, 145, 152, 154, 156 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..60.

CROSSREFS

Cf. A087157.

Sequence in context: A120878 A137996 A080057 * A195669 A277733 A288933

Adjacent sequences:  A087155 A087156 A087157 * A087159 A087160 A087161

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Aug 22 2003

STATUS

approved

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Last modified October 22 13:19 EDT 2019. Contains 328318 sequences. (Running on oeis4.)