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A323944
Irregular triangle read by rows: Numbers of unbranched k-5-catafusenes.
0
1, 1, 1, 2, 3, 3, 1, 4, 8, 12, 5, 2, 10, 29, 48, 36, 15, 3, 25, 95, 193, 185, 114, 32, 6, 70, 329, 757, 933, 706, 316, 80, 10, 196, 1094, 2896, 4239, 3960, 2304, 866, 176, 20, 574, 3659, 10834, 18468, 20313, 14787, 7184, 2238, 408, 36, 1681, 12029, 39697, 76788, 97740, 84672, 51060, 20929, 5688, 896, 72
OFFSET
2,4
EXAMPLE
Triangle begins:
1, 1, 1,
2, 3, 3, 1,
4, 8, 12, 5, 2,
10, 29, 48, 36, 15, 3,
25, 95, 193, 185, 114, 32, 6,
70, 329, 757, 933, 706, 316, 80, 10,
196, 1094, 2896, 4239, 3960, 2304, 866, 176, 20,
574, 3659, 10834, 18468, 20313, 14787, 7184, 2238, 408, 36,
1681, 12029, 39697, 76788, 97740, 84672, 51060, 20929, 5688, 896, 72,
...
CROSSREFS
First column is A001998.
Sequence in context: A089283 A288531 A323942 * A077941 A077990 A085667
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Feb 09 2019
STATUS
approved