A087158 Satisfies a(n+2)=a(n+1)+A087157(n)+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

Offset

1,2

Links

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

Crossrefs

Cf. A087157.

Sequence in context: A137996 A360627 A080057 * A195669 A277733 A288933

Adjacent sequences: A087155 A087156 A087157 * A087159 A087160 A087161

Keyword

nonn

Author

Paul D. Hanna, Aug 22 2003

Status

approved