A106241 - OEIS

A106241

Triangle of coefficients arising in connection with enumeration of series-parallel networks.

1, 2, 2, 4, 16, 6, 8, 88, 116, 24, 16, 416, 1312, 888, 120

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

REFERENCES

J. Riordan, The blossoming of Schroeder's fourth problem, Acta Math., 137 (1976), 1-16.

LINKS

EXAMPLE

Triangle begins:

2 2

4 16 6

8 88 116 24

CROSSREFS

KEYWORD

nonn,tabl,more

AUTHOR

STATUS

approved