A323480 Irregular triangle read by rows: T(n,k) (n>=1) = number of runs of length k (k>=1) in n-th generation of A306211.

1, 0, 1, 1, 1, 1, 2, 2, 3, 5, 4, 9, 5, 1, 15, 6, 2, 1, 26, 7, 3, 3, 42, 9, 4, 7, 67, 12, 6, 12, 1, 108, 16, 11, 18, 3, 173, 21, 19, 26, 8, 277, 27, 31, 36, 19, 437, 35, 50, 49, 40, 684, 45, 83, 64, 77, 1067, 57, 144, 81, 136, 1661, 71, 255, 101, 226, 2588, 87

Offset

1,7

Links

Lars Blomberg, Table of n, a(n) for n = 1..251 (The first 55 generations)

Example

Triangle begins:
1,
0, 1,
1, 1,
1, 2,
2, 3,
5, 4,
9, 5, 1,
15, 6, 2, 1,
26, 7, 3, 3,
42, 9, 4, 7,
67, 12, 6, 12, 1,
108, 16, 11, 18, 3,
...

Crossrefs

Cf. A306211, A306215, A323477.

Sequence in context: A174094 A360461 A284114 * A330404 A340575 A139171

Adjacent sequences: A323477 A323478 A323479 * A323481 A323482 A323483

Keyword

nonn,tabf

Author

N. J. A. Sloane, Jan 31 2019

Extensions

a(23)-a(68) from Lars Blomberg, Feb 13 2019

Status

approved