A139143 This sequence and A139142 are complements. a(1)=2. A139142(1)=1. A139142(n+1) = A139142(n) + sum{k=1 to n} a(k).

2, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77

Offset

1,1

Links

Table of n, a(n) for n=1..71.

Example

A139143 consists of all positive integers not in A139142 and vice versa.
A specific example: A139142(5) = A139142(4) + sum{k=1 to 4} a(k) = 20 + 2+4+5+6 = 37.

Crossrefs

Cf. A139142.

Sequence in context: A138367 A360501 A212445 * A183571 A184528 A047263

Adjacent sequences: A139140 A139141 A139142 * A139144 A139145 A139146

Keyword

nonn

Author

Leroy Quet, Apr 10 2008

Status

approved