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A036615
Number of 5-ary rooted trees with n nodes and height at most 4.
1
1, 1, 1, 2, 4, 8, 15, 28, 50, 89, 155, 267, 451, 757, 1251, 2048, 3316, 5315, 8433, 13256, 20641, 31847, 48704, 73817, 110932, 165266, 244175, 357699, 519760, 748973, 1070637, 1517978, 2135238, 2979427, 4124960, 5665880, 7722472
OFFSET
0,4
LINKS
E. M. Rains and N. J. A. Sloane, On Cayley's Enumeration of Alkanes (or 4-Valent Trees), J. Integer Sequences, Vol. 2 (1999), Article 99.1.1.
CROSSREFS
Sequence in context: A101976 A339656 A196723 * A006808 A006727 A007673
KEYWORD
nonn,fini,full
AUTHOR
STATUS
approved