A187339 a(n) = floor((7+sqrt(5))*n/4); complement of A187330.

2, 4, 6, 9, 11, 13, 16, 18, 20, 23, 25, 27, 30, 32, 34, 36, 39, 41, 43, 46, 48, 50, 53, 55, 57, 60, 62, 64, 66, 69, 71, 73, 76, 78, 80, 83, 85, 87, 90, 92, 94, 96, 99, 101, 103, 106, 108, 110, 113, 115, 117, 120, 122, 124, 126, 129, 131, 133, 136, 138, 140, 143, 145

Offset

1,1

Comments

A187339 and A187330 are a pair of Beatty sequences.

Links

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

Formula

a(n)=floor((7+sqrt(5))*n/4).

Mathematica

Table[Floor[((7+5^(1/2))/4)n], {n, 1, 120}]

Crossrefs

Cf. A187330.

Sequence in context: A322532 A284365 A059545 * A292649 A061785 A330118

Adjacent sequences: A187336 A187337 A187338 * A187340 A187341 A187342

Keyword

nonn

Author

Clark Kimberling, Mar 08 2011

Status

approved