A284384 Alternate A167381(n), A167381(n) + 1.

0, 1, 1, 2, 3, 4, 6, 7, 10, 11, 14, 15, 18, 19, 23, 24, 29, 30, 35, 36, 41, 42, 47, 48, 53, 54, 60, 61, 68, 69, 76, 77, 84, 85, 92, 93, 100, 101, 108, 109, 116, 117, 125, 126, 135, 136, 145, 146, 155, 156, 165, 166, 175, 176, 185, 186, 195, 196, 205, 206, 215, 216

Offset

0,4

Comments

The first differences (a(n+1) - a(n)) are b(n) = 1, 0, 1, 1, 1, 2, 1, 3, 1, 3, 1, 3, 1, 4, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 6, 1, 7, 1, 7, ... .

b(2n+1) = 0, 1, 2, 3, 3, 3, 4, 5, 5, 5, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 8, ... =

0, 1,

2, 3, 3, 3

4, 5, 5, 5, 5, 5,

6, 7, 7, 7, 7, 7, 7, 7,

...

= 2*n followed by 2*n+1 times 2*n+1 (by rows) = A282692(n)?

= A284359(n) - 1.

Links

Table of n, a(n) for n=0..61.

Crossrefs

Cf. A005408, A167381, A282692, A284359.

Sequence in context: A361798 A242754 A120440 * A049995 A294848 A055802

Adjacent sequences: A284381 A284382 A284383 * A284385 A284386 A284387

Keyword

nonn

Author

Paul Curtz, Mar 26 2017

Status

approved