A355890 Let s(k) = A052551(k), and write down s(0) consecutive integers beginning with 0, skip one integer, continue with s(1) consecutive numbers, skip one integer, then s(2) consecutive numbers, skip one integer, then s(3) consecutive numbers, and so on.

0, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90

Offset

0,2

Comments

This could also be regarded as an irregular triangle read by rows.

Links

Table of n, a(n) for n=0..82.

Example

The successive stages in the construction are:
0,
2,
4,5,6,
8,9,10,
12,13,14,15,16,17,18,
20,21,22,23,24,25,26,
28, ...
The row lengths are 1,1,3,3,7,7,15,15,31,31,63,... (see A052551).

Crossrefs

Cf. A052551.

Sequence in context: A096997 A187480 A081694 * A145395 A049692 A047839

Adjacent sequences: A355887 A355888 A355889 * A355891 A355892 A355893

Keyword

nonn,tabf

Author

N. J. A. Sloane, Jul 25 2022

Status

approved