A297194 Left-hand half of triangle A297193.

1, 1, 4, 1, 8, 17, 1, 12, 49, 80, 1, 16, 97, 280, 401, 1, 20, 161, 672, 1569, 2084, 1, 24, 241, 1320, 4321, 8752, 11073, 1, 28, 337, 2288, 9681, 26684, 48833, 59712, 1, 32, 449, 3640, 18929, 66376, 160929, 272976, 325441, 1, 36, 577, 5440, 33601, 143444, 435681

Offset

0,3

Links

Table of n, a(n) for n=0..51.

Example

Triangle begins:
1,
1,4,
1,8,17,
1,12,49,80,
1,16,97,280,401,
1,20,161,672,1569,2084,
...

Maple

seq(seq(A297193(n, k), k=0..n), n=0..10) ; # R. J. Mathar, Mar 04 2018

Crossrefs

Cf. A008288, A297193.

Sequence in context: A280108 A299583 A013611 * A077910 A366399 A100235

Adjacent sequences: A297191 A297192 A297193 * A297195 A297196 A297197

Keyword

nonn,easy,tabl

Author

N. J. A. Sloane, Jan 10 2018

Status

approved